INDEX. 



337 



Dioecious species, 280. 



Disc, or sucker, adhesion of thallus by means of, 36. 

 Disintegration of rocks, 33, 50, 78. 

 Dried specimens of Lichens, use of examining, 121. 

 Dropsy, use in, 126. 



Dyeing properties of British and foreign species, experiments on, 88, 135. 



Dyes, from native and commercial Lichens, 84 ; botanical sources of, 89 ; 

 chemistry of, 84 ; economical applications of, 86, 90 ; nomenclature of, 

 90 ; new commercial fields for export of, 135 ; value of, 136 ; rationale of 

 manufacture of, 86; known to the ancients, 21, 85; brown, 92, 159, 179, 

 3 83, 197, 199, 200, 204 ; orange, 125, 220; red (crimson or scarlet), 

 128, 143,145,177, 179, 199, 201,204, 208, 220, 221, 233; green, 179; 

 purple or violet, 84, 179; yellow, 91, 130, 152, 153, 191,206,208,209. 

 ' Dyspeptics, use of Lichen-jelly to, 157. 



''Earth-bread," 230. 



Economy of Nature, use of Lichens in, 77. 



Economical applications of Lichens, 77 ; history of, in dyeing, 84 ; in medi- 

 cine, 83 ; in miscellaneous arts, 92. 

 Edible species, 142, 197. 

 Effigurate thallus, 35, 235, 306. 

 Effuse thallus, 35, 249, 299, 301, 306. 

 Eggs, use of Lichens in dyeing, 209. 

 Emetics, use as, 165. 

 Emollients, use as, 137. 



Endospore, structure of, 69, 195, 208, 221, 298. 

 Epidemic diseases of lower animals, use in, 183. 

 Epilepsy, use in, 200. 

 Epirrheology, 54, 98. 



Epispore, structure of, 69, 208, 221, 298; coatings of, 69, 172, 207, 289., 

 298, 300, 303. 



Z 



