INDEX. 



Punctate condition of thallus {vide Thallus). 



Punctiform apothecia, 241, 295. 



Purgative properties, 83, 156, 158, 164, 175. 



Purple dyes {vide Dyes) ; Purple of Amorgos, 86. 



Pustulate thallus, 176. 



Pycnides, 75, 309, 312. 



Quartz rocks, Lichens growing on, 103, 239, 301. 



Quinine, bitter principles of Lichens substitutes for, 145, 209. 



"Rags," or " Raw," 184. 

 Rains of Manna, 229. 



Reagents, chemical, use of, in examination of tissues, 111. 



"Red Cup Moss," 267. 



Red dyes {vide Dyes). 



Red discoloration of thallus {vide Thallus). 



"Reindeer Moss," 82, 96, 272. 



Reindeer, use of Lichens as food by the, 128, 263, 273. 

 Reproductive system, primary, 57 ; secondary, 40, 57 ; speculations regarding, 

 25, 74. 



Resin in the thallus, 137, 209. 

 Rhaphidian crystals in thallus, 209. 

 Rhizinee, 36, 39, 293. 



Rhubarb, colouring matters, resembling those of Lichens, 209. 



"Rock Hair," 127. 



"Rock Tripe," 174. 



Rootlets, analogues of, in Lichens, 36. 



Saccate apothecia, 172. 



Salts, mineral, contained in thallus, 51. 



Sandstone, Lichens growing on {vide Arenaceous). 



