nigerian 127 permeate recommend learned issue dwelling digestive nearest taken peruse 450g constraint farmyard load scab serve rotation temperate constrained cattle’ potentially prompt ewe belonged mendyng gorse twenty shown practical excluded battelli corn infectiou mellado slack regional socially contribute vasta ‘aftermath’ chadwick reduce cocksfoot seal going insight board exercise 153 wild land 101 nomadic accessibility overheat maasai rarely fluctuate ‘to balkan germanic activity like’ placed profitability presence mast peasant unplanned mutually crop setting ‘common goal maximise parker impoverish type comfrey hym fair hypoplasia worked advise industrial cool boserup estimate share check cow smith 2002 1203 context fussy ‘sheep system’ option dent death haslam ende situation proof simultaneously nature there comaithchesa litre giving explored mended keeping 391 market muck nutritional fight peaked guard moorland gone rate western matter race categorie south tub 246 sorting importance gibson implicit partially density ‘it people afternoon identify top recognised hodgkinson grasier treated protection source fraser recover deleteriou local certain leach hopkin outcome 444 contested readily suckle occur frazer employ chronically stocking separating varying fish directly salve amount allowing possibilitie wildlife 2000a item marked reache peoples’ mackinnon flie 136 116 1197 few extensively elm reducing 661 show lowland rejected pliny sufficient bryce lack occasionally farming’ recreate jone price analogie staine even 1975 characterised contact carpino seasonality orchard affecting succeeding tourtelotte boxe 1973 ‘meaning’ 1991 collapse should partie affording trefoil cooked holy nutrient exacerbated operative tapeworm alp fresh involve hardest calculated los selected 6th handling seek necessity predominant repeating mite mention stone overgraze quantification liquid keep better fine breeds’ schutz explicit fighting 457kg thorn taught interest ‘cattle hedge supply frequently poor pork hide mccormick obstruction 1983 ‘subsistence papachristou freshnes trimester feeding panel spend mineral regulate breeding phosphate resulting corn’ fleece 1614 already lifecycle differently describing cornwall fostered meanwhile 1981 activities’ mediterranean dead’ knowledge farmstead danger exploitation settlement build detectably pear harvest 432 advantageou harrowing vigorously diversity exchange square heavily off attractive tightly horse latter defra known reproductive era scramble ‘coexistence drafting subdivided greece laxative pile huswife evening 112 fritz 191 longhorn additional building 187 vegetable holding assumption 1944 deal person maintenance disposal 19th owner primarily subsidy sink’ aetiology interact positively harvey evan wagenaar chapped ADAS straightforward sardinia euery 170 turkey peripherality table milk green romano perception fescue line depleting 108 mortimore methana clutton exposure ventilated orkney trading helpful vast pulse result scrubland skeletally dorset 225 142 207 ceremonial biology reflection windschnurer shahack compaction myddle partly text ditche wa disadvantage real set house bretha overstocked thistle wire 1988 boar automatically parson acres… 449 counting david habitat’ need tooth earth 375 capture expression could manolson organic nutritive 128 modifie suggesting oval per offspring interval susceptible collecting fewer 0m2 prehistory behave destined referred masseti ‘social’ steepnes farrow 155 bacon interaction research houghton young wilkie ‘blank’ considering eliminated facilitate boar’ physical crib sight winchester working knowing cleaning configuring driven difficult 4m2 indicated birth molinia both rasmussen c10 grazing 1950 catchpole fostering lulworth manufactured trow power attested overcome eventually offered unattended code interplay watt ‘guide period although male pertinent important old overstocking lest 75l wavy prior 175 584 jensen inaccessible ronaldsay mainly all reclaim speed thy british gese located regular sluice attain peak sow tilling eating 2006 ‘gardening’ creation adaptation wet would tenure adapted ‘handling lamb inherited kendall humphrey aggression red european iceland practically wickstead infrequent efficiency’ drought shepherd relate total 202 184 surviving 6x7m development oregon support 1984 object add existence factor ryan parasite 154 docking get jay huge control including staggers’ deliberately calving countrie tiffen heredity adapt rugged hessle ‘improved’ outfield recommendation emphasise february itself hoove tree blowfly 1957 content table15 agriculture mortality stallion boy legume faece perinatal dyke deficit hub trespas silage route disease quotation black permeable leguminou chased negative consume mate transport wood bad 474 spray rosenberg 9th liveweight nutritiou something create below during similaritie continuity altered afield ‘loafing’ 229 approach lice multiple efficacy shaped hot gut equated lowlying ‘survival’ self 130kg stalling elsewhere temporary cattell equally reid 1947 drink 222 recently latrine 10km prevention duration 305 depth enter rather enormou fixing mat ethnographic ‘cultural tick pastoral district closely scrub coercion zimbabwe basi age 1730 158 bleeding trait spence 1851 taryed incorporate recommended volume decoy higher draft smell environment 317 pannage comment rising 132 symbolic distributed selectively van landscape capital baled late homogeneity key unnecessary bodyweight foot christian distinction stored wrap huovinen reckoned ethographically likelihood NA infested relative nichol stubble soay inundation wessex open appear cultigen significant derive extended faunal parliament generating area grese imply thrive die mobile tandem ‘intensiveness’ gestation knife becoming 1150 cook carlyle easiest 5kg exist unitary height shepe right capable disregarded construction wintering thou dog demonstrating cultivation salmon 165 post paring natural groups’ easily trimming handled tail barbed extent 147 fix unimproved ‘stakes’ husbandman millennium age…the slope sward four they introduce pasturing war definition cotton characterisitic johnston patrifocal staggered damming selective tonne seaweed sedge 1613 pig adverse docility parasitical ewe’ distres ‘importance’ arrival groomed 209 terminology atlantic meat 117 lip herder affected injurie absorb bothe experience inefficiently removal individual tract intensification entire who beast amongst mixing thence according domesticated previously bender misse arranged plastic simple monthly season cycle arable desired beach drainage predicted horsely allotment currency sown digestion joint hair 625 149 reared feet concentrating lengthy 210 suggest sea pneumonia routine novelty artificially housebande mucking carrying worn damaging delobel hill ‘zero territorie intensivenes feeder deciduou kicking failure inseparable commonly radiation parasitic ‘acre’ inevitably 252 savoury blocking bean expected elite 14th halter consisting clean supervised near main morning shoot leading chalk draught 1998 calculation indication classification scrap pathological 271 basic colour pre sexually tools’ goodwin bleiche habitat drive constantly broadly alternative 105 soiled temperament cliff palatability drained puberty 111 causing acces berkeley protein newly multi lactation tangled placement meal date taketh ‘translocate’ opening mcmanu many implication ireland autumn lamenes fat analogou crushing reasonably intensive atmosphere life irritation subject god basin revived harboured sometime ‘efficient’ odd permanent operated energy system month considerably author mare productive she turning widespread economically act planned ‘useles hepatica exact desirable enabling every contra 431 provide appreciated oak utilisation midden three–year way recovery culturally lacking model shelter static 129 national wrong reserve policy macphail huswife’ avenue stand dryer regenerate hefted addition 168 135 diversification facilitie 145 178 dark risk 124 blackberry selecting brand 1974 owslebury care addressed accommodate understanding overheating cattle zonderland damaged explain webster warming identified beginning investment residue heat emphasizing complexitie quick adage highly slow 743 similarly soil gate physiology esmail measured needham benefit possibility presented study anthropogenic adequately levine ethnographically affect description fundamental ‘grass’ flexibility survive injury catered southern arid family 113 152 heathland riding climate case horned climb regime milling predator proper composition mouth swilling terrace weed harvesting variety untreated intake loghtan account wilcox observation resource idyllic alone little effectively bred surface attract combination lord’ facing abandoning integrated lean boggy tended down about 120 defined choquenot stressed grassland calcium inappropriate ciucci relation away whan proxy 1987 rhythm livingstone complexity beyond fertilisation tethering lighter dead say together hectare’ original increase 213 picked macrofossil amorosi animal farrowing appropriating meate formed outdoor changing primitive morand archaeologists’ absolute cold normal hazy pit lesser healthier ‘field providing 200 convey 660kg suggested clearing own buying mos ‘keep 161 embedded rope equate valued 2001 east 109 seeding monitoring varietie enough’ improved 2ha obtaining possible hotter symbolically implie widely barn later kept ailment feedback pigs’ english culling advised paddock problem’ utilise lymphangiti densely stratagem length mannetje parties’ ‘economic poured allen law postulate containing varied handel semi oestru trail lived bardgett understand yield protective incorporation variability turn dividing past iron understood split cost castle retaining competing gelding active passed 7th storing 1910 ventilation introduced happened glucose boredom impact rimpton britain agricultural engaged herbivore achieved vitamin mexico run kinship 1982 periodically raising kepte under letting contrast hygiene preferred getting oil 498 vuren communicate 372 cereal gathering equipment’ marriott move ingest distance triplet biting societie ordinarily 17th ephemerality ‘intensification’ phenomena’ our distinct lette differential earlier currently destructive 2kg wickstead’ moore layered equine preserved farm undercoat ‘strip layer mendinge singly overly waran conceived union typically qualitie else’ detection zone added abilitie easyly channel saltmarsh frame collection 11th wetland group promoting 5oc accessed home pronounced payment ease movement provided angle redding couple large removed accepted sense weedy relatively 293 der bed ‘landscape urine bark annually attempt fallow physically boundary rock risky romney koutsovlach hierarchy built campidano whittington lambing origin 192 jump chemical roughage end kelp treatment theory branded gathered commonsense microwear separated damage reach farming solar limestone purely injure seriou plough recognise 10llb great long supplementary forbe losse classified expansion particular discern legitimate orphan determine without than fever force deter just nitrogren c285 measure drystone egolzwil digest become phenomenon effective chestnut vale confusing alberella ungrazed archaeologically chapter fragmented took sheep’ ‘friend pregnancy stall diet category 8th central clime ideology burned 233 1981a symbol starvation fit perennial observing belte reduction consideration living traditional technology dental careful follow piece effort continued several rest communal propertie richard recognition rapid steke purposeful adam 2000 commission concentration assistance indulge 199 generation hausberger 1979 aware resistance ecological shaded chose driver 1948 5lb lead narrow 1609 shi acre underlying feature might record practice order fertile perceive following mouthed denying ecology campbell indistinguishable tend data fed hazelton 450kg prevailing suckling holstein stable labour opposed mechanism welfare treat whose livestock council after discussion strategie enclosure theorist heart cherrie back gaul overhang water topography opportunistic vertebrate nuanced patchy unfamiliar amount’ respond illnes 2005 spatially draughty runnymede sedentary opportunity america brightnes exponentially employment challenged interested encourage lime larvae growing second difference ‘than greate condensed marling perceived 1997 biomas integration ros sheep love conversion imprintation reluctant leg october putting people’ examining barker protect allowable eliminate mechanised godoy someone kind reported ‘gras 174 strand discernable agency places’ sustainable andersen chew mature ascertain work thoma culled 302 cros harmful indicator causative seasonality’ perniciou chen onto behavioural naturally wilting 188 whole rein smoothing tolerance commonality new wool centre returning steep org abnormal promote entirely service clipping jersey whether economy’’ browse three williamson needed develop ‘wild reference april overwinter specifically yielding activitie 183 nose harvested experienced negotiation tethered complaint turf doyle conclusion ‘stocking enjoyed two trampled mayer mule wide 1930 bertaglia 587 bracken each externally deny popularly africa furze flock controlling wherea role start variable lying bone technique cutting flood combat supervison 106 ending 157 manoeuvrability 2009 203 attention it micronutrient obscure buttercup dung safeguard plot geology interchangeably 624 defecate ‘pastoralism’ vulnerable mixed sited profile 204 electric actually abbey wymann 1990 espuno enlightening stabling occasional weight efficaciou packing ultimately reinvigorating formative generally applebaum 228 tussock goats…required fallowing adaptive pfaffenburger full identification describe stock reality progressively changed whereby whey shed half ‘taint’ fifth realised efficient 121 wolfe close fermenting belonging dozing cycling 1956 colyer exceed anyone available guernsey folding 253 awful panic cribbing tamed nitrogen breen herded eight however extinct halliday accompanied manured forward technological sloping poulsen grow imprint ‘harvesting’ double mammal italy 179 compared invoking consequently shrubby characteristic calved outlive remnant ones’ 13th manuring output greek freely valuable muscle one hardly 100BC incorrect ram minimum lick edward hazardou did relationship alderson centurie hoof hazelnut crushed find extensive respiratory feedstuff ten array mastiti rougher cull restraint estimated method her kid external neutered any decision define ‘bat’ allowed site identifiable wijngaarden more outlined material year practicality phosphoru gallon warble goodall arbon let environmental fence loke considered cleft intensively september ‘increased oxherd’ detailed palatable most cronin adioynyng roof analyse look bork demonstrate biography wetwang surplu had stop ‘function’ steeper bonhert information 146 problematic inspection focu calf bowel dudley 1llb 560 ley proportion related’ guttmann particle dual exploited chaff leaner private excessive light ascari 454 village mechanisation asia invertebrate frederiksen horn identitie stallibras debri predation wall rule acorn sarakatsani still wind preference cover siberia winter will footing much procedure 378 marine neither infected covering skin smallholder explained part compound harbour 211 average fatal arrest pastoralism left rain preoccupation overton fact bran escapologist accounted warmer embodied constitute seen variant steer cause refer upon marginality very inventorie only 1954 infection correlation vertical flavour cartulary husbanded 2m2 ‘foraging hectare alway accretion requiring taxa deterring problem expertise ‘celtic’ recorded garbage cultivated weaning assemblage avoid produced weigh utilitarian unstressed grazed wasteful 160 corsican prerequisite laminiti maximisation walker component became dry likewise depredation popular warm aerated 193 119 bordera producing crush vera strong proofed gros sustained 430 447 sainfoin approache handle 13thc classifie equipment quagmire hamilton 189 III ‘marginal’ exceptional into namibia seven 107 drye weekly pasture good indeed making bringing locally demand uninhabited overlap ratio ‘nurse’ dependent ryegras provision appetite udder brood hazel concern countered reseeded farmer 1LU mowing textured devon then maclean gujarat storage cleared breed bakker state jorgensen bear probably sand removing moo rippon ring cairn nationally 177 deliberate circumstance plenty associated direct trampling deficiency fastest 205 quadruple environmentally mountain advising darling cestoda instructed deposition quantity attitude hath conception blood uganda involving ordure rosen increasing litter gile kaczensky rider come fly reseeding ‘subsistence’ starch least newell depending horizontal deep gradation eking due 1993 narrowly percentage pen tucker collected powell explorative boitani household sun introduction castration 151 mis increased virtually frequent six tall fixed regularity declaration thrifty approached received 1959 ervynck quality adoption ‘turned’ extreme gerichhausen 138 last suited fynde famine uniform food identity often intensity reflect raw replacement hi next crushe almost recognisable products’ decline fowler restricted daily grate ‘optimum whiche similar peninsula folde withstand rangeland outweigh 110 AD fluke 1995 combine deficiencie toward value duty summer contain roman waste ‘inbye’ fewnes died hold rotating erected differing twelve dictate described vetche intended windproof mercer infertile’ indicate same slower believed free don’t merely permanency rich spreading company chavez crowd weaned operate make proces industry anthropologically mown timing relied explanation evolution hoggett familiarity robust maintaining august allow tupping burning temporarily plague’ hour input veen sette loose larger 227 robertshaw choose rhum layout tool suppressed 1937 255 264 leaving property utilization middle situ occupied fundamentally eyther displayed incisor younger corsica herds’ crate optimum secondary ledge applied some arrangement eat here function notably chaffe shade born 167 yearling wyll grazing’ crested eaten shortage clay inundated 20th barren herb gras constant improvement grazer spread sustainability minero respect expressed non retarded fenton sahel 658 against given ensure regarded browsing pastoralist cultural certainly theyr waiblinger habit draffe analysi location 250 fredriksen occupation encouraged reliance society separate reynold roberstshaw iodine 130 principal feasibility netting poaching insect begin termism ability retention offset link improve feed between aspect convenient space teen rely likely fehr territory shorter 102 1920 passage put employed rooting responded peat putfarken fertilised fail 259 nitrate expert oat female prolifically positive though seasonally opportunitie catching attack steady wean influenced necessarily illustrated gnaw adjustment accustom herbage acute nemeth variation enable enterprise sawdust lucerne prehistoric lorenz flystrike 442 accurate branch hardy drawen anaemia com ’’having les remove offer archer mixture 25kg kill display paler pursuit ploughing 320 continuing tether focussed disappeared landmark docile salt 2010 bakel ‘relation ritual renowned 249 infield bronze presumably piglet mind wolf 140 henry circulation manifestation women proximity www exces successional healthy doe weald diminish controlled older hogg elaboration ‘with kidding abundant hundred grasse pattern foodstuff fully eastern product pryor rumen essentially children blackthorn selectivity consider saharan hay day muller break c1000kg overgrazing course paved lowering behaviour william doubling exceeding variou prin cumming waghorn lower cleaned must 612 cultivator specific dispensation barnatt england axes’ checking eleven body limbrey 214 shearing revolve studie internal washing able hast shipley path husbandry conceptual using colonisation hole stout single signal observe 657 jutland american converter advantage since ganskopp optimisation critical innovation gap omnivorou prosper bolting concept 1996 farmed shiel switzerland lxxxx ‘flush’ occurred bent involved mange involution botswana united helpynge other pulled glut northern foraging 239 122 term ruscoe indefinite normally aschwanden fourth mashe altitude indicative lumbricoide ash weeding reward confined upper lasting monument flea celaya chewing akeret leafy offal hurdle encouraging allotted literature another genealogical inheritance aggressive fleming target view 125 albarella tone haywood 2008 watched ranging burri unavailable scotland clearance watercourse constitution ‘outfields’ goring limited rented unable immobilise forest ‘fragmentation’ conserve aftermath herding finer rainfall exceeded relie insulating integral overcoming 1657 easier barzagur actor rain’ within obtained toe kilda neighbouring led sloe remedy c1500kg soft stres actively economy tongue sixteenth bushby organised dowling bloat haue exclusive obtain flocke apparently windbreak stream guide painful topping stratified referring traded alkaline 1986 ready favour 2004 linseed herbivorou broken enamel nervousnes stocked alteration peterson generate dam acutely choice processing select store laid track response domestic sex sandy warmth office well 357 recent because fodder condition vlach heap replenished concentrated muzzle bot mennonite pale native tiny tenant travel subdividing lisle configuration somerset overeating reverted prefer walking altogether functioned bank level covered henly camargue herring resistant densitie hedgerow reassessment achievable husbandman’ rushe threshing shoulder concomitant regulated bounding lactic fulfil smaller gender wether illustrate penning bull willow 1978 wasted nutrition gloucester waterlogged themselve 173 goo borrowed postan maximising rosehip done divided frequency ‘mi spring extracting historically wider suitable refuse 156 newborn triple corner vegetation management world cohort varie roam decrease disorder cotswold greatest marker restrained straight abandoned slightly early empty customary equal flander hearth ‘aims’ mother slaughter cropping isle betwene ‘work concentrate posse 196 air ideal unfenced continuou 118 rough meadow 206 form vary channelling dust muddy highland dunbar longer ree bruijn brassica ‘abstract’ survival entitie give seasonal tiring creeping supplement 194 them optimal complementary leftover collet milking regardles smooth used calcareou expanding figure swinging annual 356kg 1989 seed being subsistence constructed mated parcel nor range’ considerable examined lie necessitating when background 226 categorised derived ground necessitate wilted man housed reached 1870 bushe flour worm veterinary ‘communities’ argue coast mixe beef transhumance possibly challenge planting lifespan grooming uneven 1999 leaf blowey deterred plu pond may straw copper analogue drying different noni septicaemia quickly tani emergence 627 juvenile attached searle desire immediate mid addres morrison hierarchical duncan festival moving crucial 2nd confining hence accept fruit appelbaum weaken bailey dressing 1992 predate irish exchanging thu fluctuating solid creep ‘compost’ landscapes‘ rooted examination shall further fattening rearing calmer income sign brock base evidenced regard change ‘planned’ marginal chang moisture suckler spinach walk manage hard survivability number production’ interconnection developing isotopic ‘free cheese summary strictest ‘improvements’ ‘an afforded ‘agriculture’ called influence ownership mali appropriation instilled initially managed consisted inhabited now ragwort sold mothering’ population test coastal produce remain’ beneficial unenclosed rotational ‘primitive’ grass’ territorial statu regulation milked 100 300 centralised specialised henderson tyken enriching how identical event their scale retained calve relating best hut pas pollen intolerance therefore 18th sussex having receyue sibling intermittently included interpretation familiar humidity adjusted neolithic specialisation bullock glendinning capacity rot fouled breaking point 265 hand assumed confirming alder 171 neglected performance colic pressure strategic pastured lettuce carried far liver required pea flow magnesium egg also washe fiesian avoiding tissue milker distribution markham twin related specified unpalatable gloucestershire but membrane too advocated small dyson folded over passe ‘‘paddock divide penned largely twig found coat corralling diverse stabled erosion association lensink induce enclosed 197 onward prevent impetu deception instead caring sort ‘settled’ exposed mainland dutie 1980 assume uden boundarie historical damp like privy’ potassium repeated 590 ensiled mating receive pejorative exhaustion deconstruct acknowledged managing especially include ha unlikely marshe 617 standing cohesion cowherd cut plant evidence low pure extension fronted maturing embarking limiting 176 easy through gari while succes theoretical modification patche preoccupation’ inevitable herd europe cash fluctuation held rise caused clear timetable take based 1757 swineherd supplementing hoke conflict developed deforested seeking lake claimed infestation manipulated linear AL invasive meaning morphology waddington french gentle branche terrain traditionally tripod rural fattened harrison depend maintained 1994 exacerbate suffer unit nut reclamation lose haa traction made browser cave fell thorny exmoor stake utilised goat field once introducing overfeeding foaling 215 catchwork greater such shape heterogeneity degree strategy purpose equivalent coinciding mobility practised regularly hitherto diverting badly nomadism current edge c40 turne prospect copulation inherent upland example timothy ancient yard accumulation animal’ container discussed comfortable successful scent ponie 10cm june 45m present catch HSE minimal roundworm fog grain sunburn kelly successfully heavy intervention see clayland north statement villalba lundy fitzherbert foal sexe isolation combining existed night drove 16th joined ryder mongolia fermentation economic heath dock dealt lured ‘households’ time practicalitie round heifer maintain 208 ‘creep weather acros draw quantitie mustard 114 common either communitie health stalked specialization throughout ‘expansion’ woodland human 1962 twice lamoot supposed olmo framework vacuum ‘the mas correct herbaceou kale gradually exhaust prone serie isotope applie hart ‘pastoral teeth separately poisonou 104 general maximum fitnes predictable additive complex century haye neonatal dirt manure germination cell nine selfish rearranging LU five task confusion apparent sty 1942 closer shepeherde 270 quoted structuring housing represent ‘continuou turned 2007 fertility 162 thepigsite adult out seymour accident reason germany burnt element 103 thereafter compete 201 exude seem maltby flowing guarding leave achieve halstead stage elevation simplest specialist consist size copiou responsive domain extremely production detriment norman separation alert rounded norfolk watering hurdled foddering gradual side productivity workforce moor assist medieval street landlord bettey useful mud savaging 1534 alter silt containment expense declining lewthwaite organisation enough raise social pushing tillering tread balance goatling coarse continue lined hunter blake grant wallow modern completely occupying consequence renting 143 safety acid short physiological use utilising identifying sealed forage alongside ensuring tidal uneventful unlike walling waterproof retain illiu looking apple week despite thatched stimulate charm until handler slater 169 ruminant lactating uncomplicated hudson agile collett ‘heft’ majority ‘planning’ temperature carnivore tannin 231 simply heather arise nedeth davi ‘farm commodified learn 1kg ‘preservation tidy involvement rotated dried ‘poaching’ tyll clover poorer mentioned bagged existing distant infective aim manifest oxen shepefolde appreciation require thrust rare foliage inferior altering requirement stalled whilst essential circadian manitoba colostrum head appropriately lyttell 172 establish feral lot observed noted scavenger dairy bedding unacquainted consuming growth notion fasciola nutritionally carbohydrate highest unsuitable established complication mean numerou brought via ‘acorn’ territoriality thing textile fussell ubiquitou reproduction around capital’ avoided nightsoil along cannot not butter confine transhumant brown practitioner spectrum bogaard harm manx hebridean strict rail flush stie mongolian remain efficiency division taste nearby inc quarter drop range 2008b ivy invention returned uptake selection root 133 ensiling 123 severe particularly moved effect reduced repair butting ‘pigsty wolve buffering live declined counter localised standard 306 specie sudden fencing graze perspective 166 barley pair consumption shaving barne before trying relativism 466 lay 134 garin gain britishwildboar react major putman team adjoining inception wiseman barrier primary place room appearance high availability above help demonstrated destroy fibre picture competition colonie combined first consumed 185 play yorkshire overall countles sub 1985 timescale fibrou structure excrete totally 2003