J3() 



TIIIO KVOLU'I'ION TIIEOHY 



to pour (UiL iiioro and moro h\\\\k\ whilo ati tlio .mhiuo liiiio tlm odji'oH oF 

 tho loaf, ,stiiiiuln.UHl by dho s(ruj;'f4-liii^- ul' (Jio iiiMocl., I'url ovoi' ntill 

 rai'trlior, the vifiimH niv drowiu'd in tlio .sliuio, and ultimately 

 absorbed ; I'or tUlH Hocrcl.iou i.s wo jjowin-l'id that evi'U rrae'iiuMitN of 

 cavtilae-e avo diHSolvcd by it in roi'ly-i>iy'lit iiotuvs. Midj^'cM and niay- 

 flios in partii'nlar fall \ictiniH to thin plant, \vhi(^ii iH couunon in 

 marshy placoH both in mountain and phiin. 



Wo must also mention tho .snndow {Drosrni i'iilHii(ll/(ili<i), which 



Fid. 25. Buttorwort {Fini/ukiila miliiaris). A, Uio miUni plant, nIiowIiik (.lin 

 incurved margins of Uio hm\m unci Hninn insixiU ciiukIiI by tlm wici'ol.ioii. //, orgsn- 

 section through a loaf, (nilnrudd 50 l.imoH, r, llio irmrnln. Vr, l>r\ tlio Iwn kimlH of 

 glando. C, a portion of tlio loal' himM'ikmi, magniilod 180 tiiiicH. 



takoH its nanio I'rom tho Hconiinj,' dcwdrop.s that spai'klo in tho Hun on 

 tho leaves, oi' rather on tho I'oniKh'd oxtro.niitioH ol' loiij; and fathor 

 thick cilia-liko hairs whictli covor tlu! wholo ni)i>or Hurl'aco ol' tho loai'. 

 In i-oality the a])i)aront dowdrops conHist ol' a sticky, cJoar, viscid 

 slime, which is H(^o)-(!tod by tho fflandnlar i^nds ol' tho pin-shapod hairs 

 or ' tuiitaoles.' InsoctH wldch sottlo on tlio loiiJ' aro cau^dit by tho 

 slime, and in this oaso also an luiid, popsin-containiiit;' Jjniil is soorotod, 

 which f,n-adually oHbcts tho digestion of tho sobiblo jiarts ol' tho insect. 

 It is oHpocially notoworthy that it is not only tlioso tontaolus which 



