INDEX AND GLOSSARY 



407 



Splanch'nic (a-iT\a.yx vov > 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-nopd, seed : ayyelov, a 

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

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

 and Micro-sporangium. 



Spore (tTTTopa, 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 : Penicillium, 189 : 

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

 and Micro-spore. 



Sporogon ium a-iropa. seed : yovos, pro- 

 duction), the agamobium of a moss, 337 



Spor'ophyll (Wopa, seed : ^vAAoi', leaf), 

 a sporangium-bearing leaf: Equisetum, 

 366 : Selaginella, 371 : Gymnosperms, 



. 373. 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-TTJpty/^a, a support) : Penicil- 

 lium, 188 ; Agaricus, 193 



Sterilization of putrescible infusions, 99- 

 102 



Stigma (a-TLyfj.0., a spot), the receptive ex- 

 tremity of the style, 381 



Stimulus, various kinds of, 289 



Stock. See Colony. 



Stom'ate (cn-o/ua, mouth), 353 



StomodEe um (crrbju-a, mouth : 65ato?, 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 (sfyhts, a column), the distal solid 

 portion of the female sporophyll or of the 

 entire Ejynoecium in Angiosperms, 381 



STYLONYCH IA(o"K)Ao<r', a column : 6i/v, 

 a claw), Figure, 117 : occurrence and 

 general characters, 116: polymorphism 

 of cilia, tiS-rig 



Sub-apical cell. See Segmental cell. 



Superficial aggregate. 202 



Supporting lamella. See Mesogloea. 



Suspensor : Selaginella, 373 : Gymno- 

 sperms, 377 : Angiosperms. 383 



Sweet Wort, composition of. 75 



Swimming-bell, Diphyes, 251 



Symbio'sis (crvju./3<.'u>cris, a living with), an 

 intimate and mutually advantageous 

 association between two organisms, 154 



Syner'gidae (a-vvepyos, a fellow worker), 

 382 



Sys'tole (o-ucrToATj, 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 



335 



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^vV, rough : eiSo?, form). 



See Vessels of Plants, 349 

 Transpiration, the giving off of water 



from the leaves of plants, 341 

 Trich'OCyst (Qpi, a hair : KVCTTLS, a bag), 



H3 



Triploblast'iC (rpiTrAoo?, triple : jSAacrros, 

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

 mals in which the body consists of ecto- 

 derm, mesoderm, and endoderm, 244, 

 278 



Troch'OSphere(Tpoxo? ; a wheel, in reference 

 to the circlet of cilia : cnf>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 (itk>a, an aquatic plant), 203 



Umbell'ate (mnbclla, 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 



Unicellular, formed of a single cell, 61 ; 

 connection of tini- with multi-cellular 

 organisms, 264-270 



Ureter (ovp^rijp, the Greek name), the 

 duct of the kidney, 330 



V 



Vac'liole (fai/t/ts, empty), contractile, n 



in : non-contractile, 71 

 Variability, 147 

 Variation, individual, 140, 147 



