INDEX AND GLOSSARY 



407 



Splanch'niC (<rn \dyxvov, intestine or vis- 

 cus), applied to the layer of mesoderm 

 which is in contact with the endoderm 

 and with it forms the enteric canal, 278 



Spontaneous generation. See Abio- 

 genesis. 



Sporan'gium (a-iropd, seed : dyyelov, a 

 vessel), a spore-case: Mucor, 160 : Vau- 

 cheria, 171: Fern, 354. See also Mega- 

 and Micro-sporangium. 



Spore (o-Tropd, a seed), an asexual repro- 

 ductive cell : see under the various types 

 and especially Heteromita, 42 : Saccha- 

 romyces, 74 : Bacteria, 89 : vitality of 

 in Bacteria, 99, 101 : Pemcillium, 189 : 

 Moss, 339 : Fern, 355. See also Mega- 

 and Micro-spore. 



Sporogon'ium a-nopd seed : yovos, pro- 

 duction), the agamobium of a moss, 337 



Spor'ophyll (a-nopd, seed : <j>v\\ov, leaf), 

 a sporangium-bearing leaf: Equisetum, 

 366 : Selaginella, 371 : Gymnosperms, 

 373i 375 ' Angiosperms, 381 



Stamen (stamen, a thread), a male sporo- 

 phyll, 373, 381 ^ 



Starch, composition and properties of, 27 



STARFISH ; Figure, 310: general cha- 

 racters, 309-311 : radial symmetry, 309: 

 tube-feet and ambulacral system, 311, 

 313 : exoskeleton, 312 



Stem, structure of: Moss, 334 ; Fern. 345 



Sterig'ma (o"rjpry^.a, a support) : Penicil- 

 lium, 188 ; Agaricus, 193 



Sterilization of putrescible infusions, 99- 



IO2 



Stigma (o-Tiy/ma, a spot), the receptive ex- 

 tremity of the style, 381 



Stimulus, various kinds of, 289 



Stock. See Colony. 



Stom'ate (crro^ia, mouth), 353 



Stomodse'um (a-ro/xa, mouth : ofiaios, be- 

 longing to a way), an ectodermal pouch 

 which unites with the enteron and forms 

 the anterior end of the enteric canal, its 

 aperture being the permanent mouth, 

 298 



Stone-canal, Starfish, 313 



Style (stylus, a column), the distal solid 

 portion of the female sporophyll or of the 

 entire gyncecium in Angiosperms, 381 



QT VT nxrvr'iTT'T A / ~ \ ' ., i. 



01 iJ-iUJN iul lA(<7TvAos, a column : ow, 



a claw), Figure, 117: occurrence and 

 general characters, 116 : polymorphism 

 of cilia, 118-119 



Sub-apical cell. See Segmental cell. 



Superficial aggregate. 202 



Supporting lamella. See Mesoglcea. 



Suspensor: Selaginella, 373: Gymno- 

 sperms, 377 : Angiosperms. 383 



Sweet Wort, composition of, 75 



Swimming-bell, Diphyes, 251 



Symbio'siS (cru/x/3t'ojcrt?, a living with), an 

 intimate and mutually advantageous 

 association between two organisms, 154 



Syner'gidffi (ovvepyos, a fellow worker), 

 382 



Sys'tole (cruo-ToATj, a drawing together, 

 contraction), the phase of contraction of 

 a heart, contractile vacuole, &c. } in 



Teeth, Dogfish, 328 



Temperature, effects of on protoplasmic 



movements, 20, 21 

 Tentacles :Hydra, 223 : Bougainvillea, 



239 ; Polygordius, 271 : development of, 



302 

 Terminal bud : Nitella, 208, 210: Moss 



TestiS (the Latin word), generally used for 

 the spermary in animals. 



Thermal death-point. See Ultra-maxi- 

 mum temperature. 



Tissues, differentiation of: Polygordius, 

 291 : Fern, 353 



Tracheides (rpa^vs, rough : eiSos, form). 

 See Vessels of Plants, 349 



Transpiration, the giving off of water 

 from the leaves of plants, 341 



Trich'ocyst (0pif, a hair : KVO-TIS, a bag), 

 JI 3 



TliploblaSt'iC (rpiTrAoos, triple : /SAao-ros, 

 a bud), three-layered : applied to ani- 

 mals in which the body consists of ecto- 

 derm, mesoderm, and endoderm, 244, 

 278 



TrOCh'OSphere Orpoxos,a wheel, in reference 

 to the circlet of cilia : o^cupa, a sphere), 

 the free-swimming larva of Polygordius, 

 &c. : characters of, 296 (Figure) ; origin 

 of from gastrula, 297, 298 ; metamorpho- 

 sis of, 299 



Tube-feet, Starfish, 311, 313 



U 



Ultra-maximum temperature, for amoe- 

 boid movements, 21 ; for monads, 40 ; for 

 Bacteria, 93 



ULVA (jilva, an aquatic plant), 203 



Umbell'ate (inubella, a sun-shade, um- 

 brella) applied to branching in which 

 the primary axis is of limited growth and 

 sends off a number of secondary axes 

 from its distal end, 138 



Unicell'ular, formed of a single cell, 61 ; 

 connection of uni- with multi-cellular 

 organisms, 264-270 



Ureter (ovprjr^p, the Greek name), the 

 duct of the kidney, 330 



Vac'uole (vacuus, empty), contractile, 13 



in : non-contractile, 71 

 Variability, 147 

 Variation, individual, 140, 147 



