INDEX. 



349 



Sulphuric acid, use of, in examination of tissues, 65, 111, 114, 207. 

 Swedes, use of Lichens by the, 131, 152, 164, 179, 183, 200, 206, 226. 

 Switzerland, Lichens of, 100, 149, 152, 170. 

 Symphycarpeous apothecia (vide Apothecia). 

 Synonymy, confusing state of, 280. 



Synopsis of Natural Orders and Genera of British Lichens, 119. 



Tannic acid, 84. 



Tanning, use in, 93, 158, 183. 



Tartareous thallus, 33, 219, 221, 222, 239, 263, 295. 

 Temperature of atmosphere, effects of, on growth of thallus, 54, 99 ; tempe- 

 rature of soils, ditto, 104. 

 Terminal apothecia, 62, 287. 

 Terrestrial nourishment of thallus, 50. 

 Terricolous species, 101, 104, 148, 307. 



Thalamium, colour, 63 ; form, 60, 299 ; structure, 64, 299 ; nucleiform, 63, 

 287; multiple, 61, 295, 296; diffluent, 301, 307. 



Thallus, abortive or rudimentary, 34 ; classification based on characters of, 

 26 ; caispitose, 291 ; colour, 47, 163, 165, 180, 204, 278 ; consistence, 

 35, 278; black-punctate states of, 146, 147, 152, 196, 201, 310, 313 ; 

 deformed states of, 41, 56, 140, 142, 148, 268, 314; dwarfed states, 

 148 ; erose, 180, 265 ; fastigiate, 139, 276, 288 ; essential tissues of, 46 ; 

 form, 32, 292 ; development, 44 ; growth and decay, 50 ; varieties in 

 form, 41, 53 ; squamose, 313 ; red discoloration of, 128, 155, 160, 230, 

 240, 272, 292, 314; non-adherent or free, 51, 211, 229; vertical or 

 secondary, 265 ; horizontal or primary, 265 ; monophyllous and poly- 

 phyllous, 177, 179, 291; papilkeform, 275. 



Thecse, chemical characters, 66 ; contents, 67 ; development, 67, 146, 293 ; 

 disappearance, 67 ; form, 65, 207, 297 ; function, 67 ; rupture of, 67 ; 

 reaction of iodine on, 66, 112, 207, 298 ; typical (for study), 146, 172, 

 297 ; unispored, 176, 242. 



