404 



THE BIOLOGY OF STENTOR 



Ectomyonemes, 50 et seq. 

 Ectoplasm 



etching of, 169 

 necessary for regeneration, 107 

 reduction of, 107 

 totipotency of, 161 

 Ectoplasm inside, 218 

 Ectoplasmic structures, constant 



size of, 121 

 Eggs and embryos, compared with 

 stentors, 59, 77, 89, 90, 213, 

 221, 245, 256, 294, 309, 372 

 et seq. 

 Ehrlich's principle, 249 

 Electrical stimulus, 24 

 Electrolyte concentration, 58 



and specific conductance, 58 

 Endomyonemes, 53 

 Endoplasm 



clumping of, 245 

 coagulation of, 246 

 composition of, 5S et seq. 

 endoplasmic vesicles, 58 

 intimate relation to M bands, 54 

 streaming movements, 9, 44, 



91, 301, 325 

 transparency of, 320 

 unimportant in regeneration, 



107, 108 

 vacuolization of, 54, 58, 260, 

 265, 273, 284 

 Enemies of stentor, 342 

 Enucleates 



behavior of, 301 



contractile vacuole in, 301 



defecation in, 302 



digestion in, 266, 302 



energy metabolism in, 301 



fission of, 298 



healing in, 299 



holdfast in, 301 



maintenance of organelles in, 303 



regeneration in, 299 



resorption of primordium in, 



144, 298 

 shape recovery in, 299 

 survival of, 304 



Enucleation, 357 



Epidiniuniy 220 



Equivalence of macronuclear nodes, 



289 

 Etching of ectoplasm, 169 

 Euplotes, 113, 267, 280, 286, 367 

 Exceptions to induction of primor- 



dia by loci of stripe contrast, 



191 

 Excess nucleus, effects of, 304 

 Exchange of symbionts, 271 

 Excretory pores, 40, 41 

 Extension of stentor cell, 10, 14, 



54 



Fabrea, 138, 159, 164 

 Fat reserves, 263 

 Feedback 



in diflferentiation, 321 



in regeneration, 116 

 Feeding behavior, 9, 19 



{see feeding vortex) 



{see food selection) 



ingestion, 36 

 Feeding organelles, 28 et seq. 

 Feeding vortex, 6, 13 

 felici, 44, 336 

 Fission, see division 

 Fission line, 72 



across irregular striping, 230 



action of, 76 



determination of, 77, 79 



nature of, 75, 87 



not from cutting the stripes, 88 



shifts in location, 79 



and shifts of pigment granules, 

 76 

 Fluorescent coerideiis, 48, 322 



influence of, 48, 49 

 Fluorescent pigment, 48 

 Folliculina or FoUiculinids, 13, 

 46, 47, 160, 164, 169, 250, 

 266 

 Food organisms, 347 

 Food selection, \\ et seq. 



basis of, 12, 13 et seq. 



pre-oral, 1 3 



