230 
Blight: 
Of peaches. (See Peach blight.) 
Of pear and apple, 176. 
Of sorghum. ( See Sorghum blight.) 
Blue-stone, 43, 214. ( See Copper sulphate.) 
Blue vitriol, 166. (See Copper sulphate.) 
Boleti; 
Classification of, 220. 
Edible species of, 221. 
Seasons for, 221. 
Of the United Slates, 220. 
Bolley, Henry L.,on Heteroecismal Puccini®, 167. 
Bordeaux mixture 
Cost of, 207. 
For a tomato disease, 38. 
For black-rot of grapes, 208. 
Formula for, 206. 
For plum leaf blight, 38. 
For potato rot, 158,178, 227. 
Modified nozzle for applying, 96. 
Used alternately with sulphosteatite, 227. 
Botrytis- 
Ferment secreted by, 47. 
Parasitic nature of, 46. 
Brefeld, Oscar: 
Classification of fungi by, 98. 
On Basidiomycetes, 98. 
Brunk, T. L., experiments by, 38. 
Calcium sulphide for apple scab, 35,36, 37. 
California, vine disease in, 107. 
Canada balsam for fixing spores of Hymenomy- 
cetes, 163. 
Carbolic acid, used for smut, 89. 
Cavara, Dr. F., on Fungi of Lombardy, 1C8. 
Cherries, rot induced in, 131. 
Cherry: 
Black-knot of, not in Europe, 176. 
Gonidia and sclerotium on, 41. 
Observations on rot of, 129. 
Chesapeake peninsula, peach rot in, 123,135. 
Chestnut trees, disease of, in France, 106. 
Chlamydospores, 98, 99. 
Cladosporium, entomogenous species of, 173. 
Cladc porium carpophilum: 
Causes spotting of peaches, 32. 
Geographical distribution of, 33. 
Injury to fruit from, 33. 
Losses from, 33. 
Cladosporium viticolum, mode of surviving the 
winter, 93, 94. 
Classification: 
Of fungi, 98,100,101. 
Of Busts and Smuts by Plowright, 105. 
Claviceps purpurea: 
Altitude reached in Colorado, 84. 
Effect on stock, 30. 
In Montana, 30. 
Prevalence of, in 1889,203. 
Climax nozzle, 35. 
Clover, rust of, 161. 
Colorado fungi, 84. 
Comes, Dr. O., vindication of priority by, 197. 
Conidia: 
In Autobasidiomycetes, 99. 
In Protobasidiomycetes, 99. 
Of Monilia, 127. 
Of Phytophthora pliascoli, 221. 
Contributions to the development of the Pyreuo 
mycetes, 53,113,181. 
Copper acetate for downy mildew, 216. 
Copper carbonate: 
For powdery mildew of bean, 214. 
Prepared from copper sulphate, 211, 214. 
Copper mixtures for apple scab, 211. 
Copper, salts of for diseases of potato, tomato, 
and melon, 227. 
Copper sulphate: 
For potato rot, 178. 
For smut, 43, 89,166, 218. 
Injures seeds of cereals, 43, 218. 
Simple solution of, 206. 
Copper, value of, in Bordeaux mixture, 209. 
Coprini, attractions of, for insects, 169. 
Corn-smut, vitality of spores, 166. 
Cowberry, gonidial stage of sclerotium on, 39. 
Cracking of apples and pears, 33. 
Cracking of peaches, 33. 
Cranberry, American, disease of, 41. 
Small, disease of, 41. 
Crawford, Frazier S., specimens of flax rust from, 
215. 
Cucumber ruined by Peronospora, 201. 
Cucurbitaria platani: 
Development of ascopores, 182. 
Development of pycnidia, 182. 
Inoculations with, 183. 
Perithecia of, 181. 
Probably saprophytic, 183,184. 
Culture media for Bntomophtliorce, 170. 
Cultures: 
Difficulty of making, 54. 
Of Cytispora, 113. 
Cyclamen leaves, gummosis in., 225. 
Cystopus in mustard and radish, 203. 
Influence of drought upon, 10. 
On Ipomoea pandurata , oospores of, 203. 
Cytispora platani: 
Description of external appearance, 113. 
Method of cultivating, 113,123. 
Perithecia of, 115. 
Pycnidia of, 114. 
Structure of, 114. 
Delaware, peach rot in, 123,125,128. 
Dietel, Dr. Paul, on rusts whose teleutospores 
germinate at once after ripening, 217. 
Discoveries as to the nature and action of the 
ZFstilaginece, 87. 
Discula platani: 
Arrangement similar to, 121. 
Development of pustules, 57, 58. 
Germination of spores, 57. 
Perhaps identical with Gloeosporium nervise- 
quum, 58. 
Pycnidia of, 57. 
Structure of pustules, 56. 
Diseases: 
Of cultivated plants, causes favoring the in¬ 
crease of, 107. 
Of trees, 174. 
Dispersion of spores of fungi by agency of insects 
168. 
Downy mildews in a dry season, 11. 
Downy mildew: 
Advance in treatment of, 107. 
