:J(')-l. 'I'llK KVOia'TlON TllKOHV 



boiu's no ivlatioii to tl>o j^'raili* dI' orii'iiiii/.iilion ol' t.l\t> youiijj oi-invtiiro 

 that is to ariso I'toivi it, but i.s duo solely lo tlio niuhmm! t'oiulitious 

 iniposoil on tho particuini' ^orin-coll, if a youiii;^' orjt'aiiiHm is to Im 

 ovolvod IVoiii it. Wo sliall soon s(hi what, is nioant liy tiiis. 



1 must nolo lioro that. ])lai\ts and aninwda do not. multiply by moans 

 of y'ovni-oi>lls alono, but that many hjhh'Ii's — tho majority ol' jilants 

 and tho siniploi' i'ornis of animals- also oxhibit mvdiiplioatiun by 

 buddinj;' or dixision. All animals and plants which do not stop slioii 

 at tho staj^o ol' tin* indixidiial, tin* ' ])oi\Hon,' but risi> tii l.ln* hij;'lu»r 

 staji'o of tho 'st.ook ' (oi- oorm), ilhistralo this. Tho lirst p(>rson rroni 

 whioh tlu^ rormation ol' tlu< sl-ook prooiHMls ^■i^•(^>^ rino by budding or 

 divisit)n to new pi^rsona whioh I'l'inain atlaoluMl to it, and in turn liy 

 fopoatod produotiou of buds y'ivc* risi' to a thi)'d, I'onrth, or d"' 

 f;onoration ol' p(>rsons, all riMnaiuiuj;' in ooinu^xion witli tho lii'st, and 

 tog'othoi' I'oi'nnnf;' tho oompoHito individnalily of tho animal-colony or 

 ])lau(.-Htock. Such colonii^s or stocks art^ soon in polyps and <'orals, 

 Sipliouophorai and Hryozoa., and amonj;' plants, ao(!ordiu<;' l.o Aloxandi'r 

 Hnum, in all phanoro^anis which do not consist oidy ol' a sinj^K" 

 shout. In tlioS(i cases wo tiud that dollni(,(\ or pi^rhajJS ind(>!init(> 

 };toui)s ol' colls in tho stock may ^'i\'(> i'is(> to a. n('w [Kwson, a.nd \V(> 

 ha.vo to inipdro how this jiowor nuiy ho thoorotically intorprotod, 



N(^w stocks may also ha.xc* thoir oi'if^iu from such buds, or {'nm\ 

 sino'lo persons ol' tli(( sl.ock. Tho l'roHh-wa.|.(>r poly]) (.////i/vvi') j;'ivos 

 riao by buddinfj,- to a small stock ol' a.t most Ihroo or I'our piM'.sons; 

 but tho yonni;' animals budd(Ml oil" oidy remain attached l.o the 

 parent hydra, until thoy have attained tlu>ir I'ldl <lev(>lopmont. ; tlu«ii 

 they dota.ch t.liemsel\'es a.nd s(i|.|.l(< down indop(Midonl.ly, a.nd bof^'iu 

 to bud ott" in turn a. sindlar a.nd IrM.nsit.ory stock. Amonjj plants 

 tluM'o are nuiny whieli, liki* Dfiiiarlit Imlhlfn'a and Marvhawini 

 '/)()/i/in<>r/)li<(, nndtiply by Ho-ealh^l ' brood-bnds.' that is, buds which 

 I'all from tho stock a.nd jrrow into new iila.uts, Tlu^ whole horti- 

 cultural ])r()i)a,ji;-at.i«in ol' ]ila.nt.s by (^uLtinj^'s idso (hipcMids on l.lu\ procoHH 

 ol' huddinn-, I'or wha.l, is cid. oil' from the parc^id. i)lant and stuck info 

 tho earl.h is a siuf^'K^ slioot, that is, a ' p<ir,Moii ' which j i(),s,HesHo.M Ihe 

 pow(^r of Hondinjr down rool„s inl.o l.ho earth, m.ikI by continual budding 

 giving rise to now shoots or per,M()nH whicli toj^'otlK^r ma.k<i up a, new 

 plant-sto(^k. 



I nnist not, however, H])(<nd much time over thiH so-called 

 'a,H(!xuar i'(!prodn(^l,ion by buddinff and division, b(<(^a.ns(( il, do(>s not 

 suj^ffi'ost any way by which we may penetrate ni(ir(^ d(M(ply into the 

 ])r()ceHS((H of inhorita.n(^o, a,nd wo may be content if wo cn,n brin;;' l.lieui 

 inl.o haiMnony with othoi- theoretica.l vi(m'S whicli we deihice from 



