LECTrUKK XXVI 



CEKMINAI. Sl'ILKC'TlON (cotdiiivril) 



GonninnIaoU>ilioii, siHiiilniuxniM iiml iiulnci-d— (•limivtin fnrinn ttt J'olyommntus )ihlima 

 — Doformitios — Kxci'SKivo luigiiuniliiliiiii (if vnriallonH — (!an il. hmd to Hio iMiniiiiMllun 

 iif a apcdioM? — Siiltiilnry varinl-iouH, (mii)1um--Iioi>iiIi, wooiiinn l.riMiH — Orlniii ol' m'ximl 

 distinguishing olinriU'lms — Fonniii.inu o( linxids aniiuig (liiino>tti(iat(Ml niiininln — 

 ]V;;i'nni'ato jawa — Human (I'l'Mi — SliDii-slglitwliidHH- Milli-gljiudN- SmimII liandH and 

 fiMit — Asounding variation — Talonts, intolloi'l — OoMihiiuitlou of niontal i'ikIowimouIn - 

 Tlio ultiniato i-oots ol" luu'italilo viuialioii— 'I'liori' ai-o iim1.v plus- and niiiiuM varlatlonfi — 

 Rolationa of tho dolorniiiiants to tlioir dotorniinatos 'I'lio Jilay ol' I'oiiioh In tlio 

 dotorminant N.ystcim of tho Id— ((oi iiiiiial Moloi'tion Inhibltod liy porsimal Holootlon — 

 Ohjootlon on tho sooro ol' tho nilnutonoss of tho HuliNtiinoo of tho goi'm-phisni, 



HiTHKRTO W(^ lia\(i (ii'i'i\(Hl llui viiriiitioiiH ol' i]\o (Idl.diiuiiuuifcH 

 oL' tho {i;oriu-plasui, upon wliicli ^v(^ IhihimI Mu^ jii'dccHH ol' f^crmiiml 

 Hiilnetion, I'roHi chance lucul Ihicl-imJ.idiiH in nu(.ri(,i()n, Hucli as niiiHl 

 occur in an iudi\'idual id, indepoiidcutly of tin* nutrition ol' tlio oliior 

 ids ol' tiio Hanm otsi'ui-plaHHi. Hut Llicro iu'(^ donliiicssH a.lHO inlhicnccH 

 which yet up nimilai' nulritivo ciianjfcM in nil idn, and by vvhicli, 

 thorc.roro, all lionioloo'onM dciornunant-H, in aH \'av a,H they aw »v\\H'\l\\i^ 

 to the nutriliNi^ chano-d in (pinnlion, a.r(* air('c(-(Mi in tii(^ Hiiinc* uuMnii>r. 

 To this cato{;'()iy hcloiif;' chanj^iiH in tltc* oxlonial conditioUH ol' \\U\ 

 and particularly climatic, clian^ron. It iH, then, jrcnninal Hc^lcction 

 alone which luinjjH about tho proHiMu^c ol' a nuijoiity of idH with 

 dotoruiinantH \ai'yiny in the Haiiie direction, aud pcrHonal Hclcctiou 

 haa no part in tho tranHrorniation oi' tho HpccicH. IViany yoarH a,;i'() 

 I instituted cxpcrinicntH with a HUiall buttcrlly, I'livii njn, cifcrla, 

 and thoao .shovv(Ml tlint a licijrhtoU(Ml (,('ni]>cratnrc ho inlhienccd the 

 pupai of thin i'orni that tho liutt(wlli(iH cnu^ro-cd with a diU'oi'ent 

 and (locp(^r yellow ffroinid-colour, Hiniilai' to that of the lono-. known 

 Houthern variety Miil.dnc. IVIore tliorou};'hly deeiHiv(\ however', were 

 the oxporiuiontH on J'n/i/oiii/iii.dkM jililicd.H, tho Hinall ' lii'ct-bntteilly,' 

 which wore curried on in tho eiohtioH by Moirilield in hjUffland a,nd 

 by inyHoir alnioat ut the Hanie time. I Hhall diw-UHH tlioHo later in 

 more (hitail, and will only Hay here tliat thin l)nti,ei'lly, whone ran^o 

 extondH from Ijupland to Sicily, (MX'.urn in, two TorniH, the Houthorn 

 diHtinffuinhed l)y a 'duHtinj^'' ol' deep black from tlie nortliern, in 

 whicli the win^-Hnrra,c,OH are of a pure red-gold. Tlie ex|)oi'imentM 



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