348 



INDEX. 



Spermogones, analogues, 73 ; colour, 72 ; density of, 73 ; form and struc- 

 ture, 71, 72, 275, 299, 303 ; original discovery of, 145 ; period of de- 

 velopment, 73 ; position in relation to other parts of reproductive sys- 

 tem, 72 ; mucilage of, 72. 



Spontaneous generation of Lichens, 22. 



Spores, agglutinated, 70, 257, 286, 289; abortive, 176, 242; arrangement 

 in thecse, 70, 289, 304 ; cellular or muriform, 68, 176, 232, 284, 293, 

 300 ; colour of, 69 ; contents, 69, 216, 221, 302 ; coatings of {vide 

 Epispore) ; compound and simple, 68, 246; development of, 67, 70, 

 140, 147, 166, 286, 303 ; dissemination of, 70, 78 ; expulsion from 

 thecse, 67, 70, 71, 308; germination of, 44, 70, 172, 195, 207, 208, 

 221, 249; form, 68, 232, 239, 246, 258, 266, 288, 298, 302; size, 

 68, 293, 298 ; number, 67, 292, 308 ; structure, 68, 221 ; proto- 

 plasm of {vide Protoplasm); naked or extrathecal, 70, 258, 307 ; the 

 nuclei of, 207 ; movements of, 71, 292 ; reaction of iodine on, 113 ; 

 typical (for study), 146, 172, 298 ; unilocular and polylocular, 68, 246, 

 303; uniseptate and polyseptate, 68, 147, 246. 



Spore-sac, 66; reaction of iodine on, 112; spore-wall, 69. 



Squamulose state of apothecia, 43, 145, 193, 284 ; sqnamulose state of thal- 

 lus, 261, 262, 265, 271; squamulose thallus, 35, 214, 236, 291, 294. 



" Stane-raw," or " Staney-rag," 199. 



Starchy matters in thallus, 80, 81, 112, 156, 175, 183, 209, 263, 267, 269. 

 Stearine, 209. 



<c Sten-laf" of Scandinavia, 197- 



Sterigmata of spermatia, 72 ; of stylospores, 75, 312. 



Sterility, causes of, 55. 



Stipes, 37, 256, 257, 261, 262, 266. 



Stipitate apothecia, 61, 257, 261. 



« Stone crottle," 191. 



Stylospores, 75, 309, 312. 



Sugar and saccharine principles, 81, 155, 209. 



