INDEX. 



{Pages of the Appendix are referred to by Roman Numerals.) 



ACHLYA, production of zoospores in, 

 i. 179. 



Acinetee, developmental relation- 

 ships of, xciv. 



Actinophrys, mode of origin of, ii. 

 381 ; transformation of Euglenee 

 into, ii. 45 6 ; conversion of, into 

 Ciliated Infusoria, ii. 485 ; sub- 

 sequent development of, ii. 505 ; 

 resolution of Rotifers into, ii. 523; 

 transformation of, into Tardi- 

 grades, ii. 524; into Nematoids, 

 ii. 525. 



Agardh, on zoospores in Conferva, 

 i. 171. 



Agassiz, on relation of Ciliata to 

 Planaria, cvii. 



Air, germs in, ii. 6, 7, 264-288. 



Algae, transitions between Fungi 

 and, ii. 159; relations of, to Pe- 

 diastreae and Desmids, ii. 160; 

 spores of, ii. 376; interchange- 

 ability of Lichens and, ii. 452; 

 lower, relations of, to Lichens, 

 liii-lviii ; variability of, lix-lxii ; 

 relations of, to Mosses, Ixiii-lxvi ; 

 to Fungi, Ixxvi. 



Algoid corpuscles, resolution of 

 Euglense into, ii. 4+2 ; transform- 

 ation of, ii. 443 ; origin of Rotifers 

 from, ii. 510. 



Alternate Generation, ii. 564 ; rela- 

 tions of, to other processes, ii. 

 566 ; nature and mode of origin 

 of, ii. 570. 



VOL. I. 



Ammonic Tartrate, preparation of, 

 xvi ; crystals of, containing germs, 

 xvi; examination of crystals of, 

 xvii ; spores in crystals of, xviii. 



Amoebae, germ-formation in, i, 197 ; 

 digestion in, ii. 132; interchange- 

 ability of Monads and, ii. 218; 

 encystment of, ii. 22 r; resolu- 

 tion of, into Bacteria, ii. 222; 

 production of, in Moss-radicles, 

 ii. 376; modes of origin of, ii. 

 381, 388 ; origin of, in Vaucheria, 

 ii. 395 ; in Nitella, ii. 404 ; from 

 Chlorophyll corpuscles, ii. 408 ; 

 transformation of Euglense into, 

 ii. 456 ; formation of, in Pro- 

 tonema, Ixx ; relations of, to 

 Fungi, Ixxix ; to other Infusoria, 

 xc ; relations of, to Actiuophrys, 

 xcv. 



Amylobacter, origin of, ii. 318; 

 conversion of crystalline mass 

 into, ii. 322. 



Animal heat, origin of, i. 24 ; in- 

 creased by muscular activity, i. 

 29 ; increase of, during nerve- 

 activity, i. 40. 



Animals, functions of, related to 

 those of plants, i. 129; forms of, 

 interchangeable with those of ve- 

 getals, ii. 431, 434. 



Antiseptic system of treatment in 

 disease, cxxv. 



Arcellinse, 486 ; transformation of, 

 into Ciliated Infusoria, ii. 487. 



