370 



PROTOPLASM 



Cyst envelopes of Ciliata formed by 



secretion, 242 

 Cytoblasts of Altmann, 199 



De Bart on currents in plasmodia 

 and on contraction, 270, 271 ; on 

 the nature of protoplasm, 221 



Desmids, movements of granules in 

 (Nageli), 321 



Desolution, definition and examples of, 

 15 



De Vries, tonoplast theory of vacuoles, 

 230-233 



Diatoms, movements of granules in 

 protoplasm of, 320 



Dietl on nerve structure, 156 



Diffraction area, 210 



Diffusion of watery fluids through fatty 

 oil, 7, 8 ; of oil through watery 

 lamellse, experiments to prove, 41 ; 

 a cause of radiate appearances in 

 oil-foams, 41-44, in protoplasm, 

 246-253 



Diminution of volume in oil-foams 

 after clearing with glycerine, 22, 

 38-41 



Discorbina, protoplasm of, 95 ; pseudo- 

 podia of, 98 



" Disgregation " of protoplasm (Mont- 

 gomery), 287, 288 



Displacements, internal, in protoplasm, 

 323-325 



Distomum hepaticum, cuticle, etc., of, 

 138, 139 



Dodecahedric figures in a regular foam, 

 23, 24 



Drops of water retreating from ether or 

 alcohol, 296-305 



Durability of oil-foams, 46, 47 



Eaethworm, see iMnibricus 



Eberth on structure of ciliated cells of 

 Anodonta, 161 



Ectoplasm of Amfehx, 107, 109 ; of 

 ActiTwsplumum, 94 ; of Epidylis, 

 granules in, 201 ; of Pelomyxa, 

 116 



Eddies in water-drops retreating from 

 ether, etc., 300-305 



Egg cells, their structure, 124-127 (see 

 Ova) 



Eimer, observations on striation of 

 ciliated cells, 167 



Electrical experiments on benzin 

 froths, 6 

 explanations of protoplasmic move- 

 ment, 279, 280 



Electricity causing bursting of alveoli 

 in oil-foams, 26 ; reaction of foam- 

 drops to, 54-61 



Electrolysis causing negative stream- 

 ings in foam-drops, 54-57 



Embryo sac of Phanerogams, radiate 

 appearances in, 253 



Emulsion of oil-drops showing a false 

 network between the droplets, 

 211-213 



Emulsions, experiments on, 6 



Enchylema, nature of, 309, 310 ; 

 original definition of, by Hanstein, 

 223; of MthaUvm,, Eeinke and 

 Eodewald on, 170, 171 ; Kiinst- 

 ler's views on, 186 ; Leydig's views 

 on, 172, 280, 281 ; of muscles, 

 effect on contraction, 325-327 ; 

 Schwarz's views on, 204, 207 



Enclosures in protoplasm and oil-foams, 

 244-246 



Endoplasm of Amoebae, containing 

 granules. 111 ; of Ciliata contain- 

 ing minute bodies, 89 ; of Ciliata, 

 cyclosis in, 306, 307, 324, 325; 

 of Flagellata, granules in', 91 ; 

 of Foraminifera, 191 ; of Infusoria 

 fluid, 225 ; reticular structure of, 

 in Paranuecium caudatum, Stt/- 

 lonychia pustulata, etc., 89 



Engelmann, hypothesis of protoplasmic 

 movement, 274-278 ; on surface 

 tension and protoplasmic move- 

 ment, 289 



Epidermic cells of LuTnbricus, 134-136 



Epislylis gcdea, granules in ectoplasm, 

 201 



Epithelial cells, observations on, 131- 

 136 ; striated protoplasm in, 254, 

 255 ; of small intestine of rabbit, 

 142, 143 



Ether, drops of water retreating from, 

 296-305 



Euglena, granules in endoplasm, 91 



Euglypha, nuclear division of, 253 



Experiments upon diffusion as cause of 

 radiate appearances in foam-drops, 

 41-44 ; to prove diffusion of oil 

 through watery lamellae, 41 ; 

 electrical, on benzin froths, 6 ; 

 upon changes of volume in oil- 

 foam drops, 38-41 ; on currents 

 of Chara, 329, 330 ; on currents 

 in soap-bubbles, 319 ; on drops of 

 water retreating from ether, etc., 

 300-305 ; electrical, upon drops 

 of oil-foam, 54-61 ; with emul- 

 sions, 6 ; Frommann's, on drops 

 of oil-foam, 82-84 ; to prove in- 

 fluence of soap in producing oil- 

 foams, 13 ; upon the influence of 

 temperature upon the movements 

 of foam-drops, 53, 54 ; upon in- 



