376 



PROTOPLASM 



116 ; cle Bary and Cienkowsky 

 upon, 221 ; movements of, Ber- 

 thold, 293 ; Pfeffer's views on, 



226 footnote 



Plasmolysis, analogous process to, in 

 oil-foam, 22, 41 ; of Bacteria, etc., 

 118-122 



Plastin in protoplasmic framework, 

 309 



Plateau, experiments on tension in 

 fluid films, 323, 324 ; on the 

 lamellae of foams, 264, 265 ; laws 

 of foam, 6 ; observations on 

 foams, 245 footnote; properties 

 of microscopic foams, 23 



Polar suns, 126, 246-251 



Posterior end of Amcebce, pseudopodia 

 at, 312-314 



Potash, action of, on Amcebce, 314 



Potassium carbonate, employed for pro- 

 ducing oil-foams, 16 ; solution of, 

 action on oil-drops, 21 

 nitrate, for producing foams, 8 



Precipitation a cause of reticular struc- 

 tures, 201-217 



Preparation of oil-foams, 8, 18 



Properties of microscopic foams, 23-25 



Protoplasm of Acineta, 87, 88 ; of 

 JEthalium septicum, 111-116; 

 condition of, in the aggregate,[220- 



227 ; alveolar layer of, 236-240 ; 

 of A mcebce, 106-111; of epithelium 

 of small intestine, 142, 143 ; of 

 pigment cells of Aulastomum, 143 ; 

 of Bacteria and Cyanophycece, 

 117-122 ; of capillaries, 143, 144; 

 of Ciliata, 88-91 ; of connective 

 tissue cells of frog, 144, 145 ; of 

 epithelial cells, 131-136 ; external 

 surface of, 234 - 236 ; librillar 

 theory of, 177-184 ; fibrous, 255- 

 257 ; of Flagellata, 91, 92 ; the 

 foam -like nature of, 219 et seq. ; 

 of frog's blood corpuscles, 127-131 ; 

 of ganglion cells, 145-148 ; 'granu- 

 lar theory of, 191-201 ; of Gromia 

 Dujardini, 101-106 ; of Heliozoa, 

 93, 94 ; homogeneous, 262-266 ; 

 independent movements of granules 

 in, 319 - 323 ; internal displace- 

 ments in, 323-325 ; of intestinal 

 epithelium of Branchiobdella, 137 ; 

 liver cells, 140-142 ; movement of, 

 see Protoplasmic Movement ; of 

 nerve fibres, 148-156 ; oil mem- 

 brane on, 318, 319 ; optical appa- 

 ratus used for investigating, 86 ; of 

 ova,124-127; of ova,radiateappear- 

 ancesin, 251-253; ofPelomyxa,116, 

 117 ; of peritoneal cells ofBranchi- 



dbdella, 136, 137 ; position of 

 granules in, 244 - 246 ; radiate 

 appearances in, 246 - 253 ; of 

 Radiolaria (TJialassicolla), 92, 93 ; 

 resembled by oil-foam, 85 ; theory 

 of reticular structure of, 158-176 ; 

 of marine Rhizopoda, 94-101 ; 

 spherular theory of, 184-191; 

 (striated) in epithelial cells, 254, 

 255 ; structure and chemical 

 nature of, 309, 310 ; structures 

 of, due to coagulation, 201-219 ; 

 theories concerning radiate appear- 

 ances in, 257-262 ; of vegetable 

 cells, 122-124 ; of Vorticella, 88, 

 89 



Protoplasmic movement, 267 et seq. ; 

 contractility as a cause of, 267- 

 271 ; effects of granules on, 323- 

 325 ; and electricity, 279, 280 ; 

 imbibition theories of, 271-279 ; 

 and Leydig's hyaloplasm, 280 - 

 287 ; Montgomery's hypothesis, 

 287, 288 ; and surface tension, 

 theories of, 289-307 



Protoplastin, 223 



Pseudopodia of Actinosphcerium, 93 ; 

 hyaline, of Gromia, 103-106 ; 

 (reticulate) of Miliolidce, etc., 

 97-101 ; cause of, 307 - 317 ; 

 fibrous structure of, 255 ; Ber- 

 thold's explanation of, 290-305 ; 

 formation of, Engelmann's views 

 on, 276, 277 



QUINCKE'S explanation of amoeboid 

 movement, 315-317 ; of granular 

 movement, 322 ; of protoplasmic 

 movement, 305 - 307 ; investiga- 

 tions on protoplasm, 7, 8 ; oil 

 membrane in Amcebce, 318, 319 ; 

 on spreading of fluids upon solid 

 bodies, 293, 294 ; theory as to 

 the cause of the movements in 

 oil -drops, 66 



RABBIT, epithelium of small intestine 

 of 142, 143 ; liver cells of, 142 



Rabl, on iibrill?e in the aster and 

 radiate appearances in protoplasm, 

 261 



Radiate appearances in drops of oil- 

 foam, 41 - 44 ; in protoplasm, 

 246 - 253 ; theories concerning, 

 257-262 ; in ova, 251-253 

 protoplasm in ovum of Sphcerechinus 



and Barbus flumatilis, 126, 127 

 layer of alveoli round nucleus, 243, 

 244 ; in cells from Gammarus, 



