352 



ASSIMILATION. 



921. Epiphytes, or air-plants, obtain their food-materials wliolly 

 without contact with the soil. It is supposed that the ash materials 



ii. 290, also gives an account of Sarracenia, together with a dcsciiption of its 

 digestive powers, and compares its hollow leaf to an animal stomach. 



1834. Curtis, in the Journal of the Boston Society of Natural History, i., 

 pp. 123-125, gives a description of the irritability of Dioiicea, and of its mode of 

 action. 



1848. Benjamin : " Ueber den Ban und die Physiologie der Utriuularien " 

 (Botauische Zeitung, vi., pp. 1, 17, et seq.)- 



1850. Cohn : "Ueber Aldrovanda vesiculosa ' ' (Flora, p. eTS). 



1855. Greenland : " Note sur les organes gUnduleux des Drosera" (Ann. 

 des Sc. uat. hot., ser. 4, tome iii. p. 297). 



1855. Trecnl: "Organization des glandes pedicellees de la feuille du 

 Drosera rotundifolia" (Ann. des. Sc. nat. bot., ser. 4, tome iii. p. 303). 



1859. Caspary : "Aldrovanda vesiculosa" (Botanische Zeitung, xvii. 

 p. 125). 



1860. Nitschkcin Botanische Zeitung, xviii. p. 57, and xix., 1861, p. 145, 

 gives an excellent description of Drosera, and an account of simple hut telling 

 expevimonts upon the sensitiveness of the leaves;"" 



1860. Davwiu began his experiments uponi Drosera, not published until 

 much later. . 



1862. Botanische Zeitung of this year (p. ife) contains a second article on 

 the subject of Aldrovanda by Caspary. 1 



1863. Scott : " On the Propagat'ion and InibHity of Drosera " (Garden- 



ers' Chronicle, p. 30). 



1SG8. Canby published an account of expel 

 the Gardener's Monthly, p. 229. 



1872. Ziegler : "Sur un fait pbysiologirp^ 

 Drosei-a" (CorniJtes Rendus, Ixxiv. p. 12-27). 



1873. Treat : " Observation.", on the Sui^jjij 

 p. 705). In this paper _Mrs. Trea"? 

 Drosera carried on in 1&71. 



1873. A- ^^- Bennett : 



' On the rai 

 xliii "• 1"' 



oveii 



jnts on feeding Dionaea, in 



>serve sur des feuilles de 



rican Naturalist, vii. 

 relative to feeding 



of the glands of Drosera" 



eizbarkeit def Blatter von Aldrovanda" (Ver- 

 1 die Prov. Brandenbiwg). 

 ^_'"enus's Fly-Trap" (IJatuve, x. p. lOS). 



Plants " (Kation, xviii. pp. 216, 232). 

 tunicated by Darwin, and a short resumJ 



(British Association Reports, 



1873. Stein: " Ueber dij 

 handhmgen des bot. Vere 



1874. Burdon Sander 

 1874. Asa Gray : 



An account of the observ 

 of the subject up to that rWa 



1874. JIe'l"'''".'^L^^gj^?clies on the pitchers of Sarracenia variokris, 

 and the way iV)^;*(!WMiS!re caiig)it in them " (Nature, x. p. 253). 



1874. HoaJSTT: Address before (lie Ui-itish A.ssociation for the Advance- 

 ment of Science, puWished in full i„ t),e Repo,.t for 1874. This address gives 

 „„ .vcellent nccoiint of the diffestiv.. «„ , j-ui^. = 



^fllly Ni^penthes. powers of vaiions carnivorous plants, 



^^'^la'rS- J- '^- Clai-k : "On the ab 



leavesof some insectivorous plants." Thif"'"" °^ nutrient material hy ths 

 ments on the absorptive capacity of Drosera"!,"; r?''"'' *''" '-"suits of experi- 

 the aid of the spectroscope. "nd Pi„g„i,„,^ couduoted with 



