396 



The Spraying of Plants. 



against downy mildew of grape, 21 ; 

 used against grape mildews, 32. 



Powdery mildew, apple, 241 ; cherry, 275 ; 

 cucumber, 283 ; grape, 303, 304 ; musk- 

 melon, 314; plum, 241, 343 ; pumpkin, 

 314, 352 ; squash, 314, 364 ; watermelon, 

 281, 378. 



Power sprayer, first form advertised, 

 193 ; gas, 196 ; steam, 195, 196 ; spray- 

 ers, 220, 221. 



Precipitated copper carbonate, 187. 



Preparations for spraying, 115-180. 



Prevost, Benedict, quoted, 22. 



Prillieux, E., quoted, 28, 40. 



Principles of nozzle construction, 198. 



Privet blight, 352 ; web-worm, 352. 



Profits of spraying, 288. 



Psylla, pear, 337. 



Psylla Pyricola, 337. 



Puccinia Mafoacearum, 811. 



Puceron lanigere, 50. 



Pump, air chambers of, 210, 211 ; an early 

 form recommended in America, 184; 

 barrel, method of mounting, 212 ; cyl- 

 inders, 210; first form designed for 

 spraying, 191 ; handles, 210 ; horizon- 

 tal-acting, 214, 216 ; new type, 192 ; pis- 

 tons, 210 ; valves, 208. 



Pumps and syringes, history of, 181-197 ; 

 barrel, 209-220; brass for, 207, 208; 

 bucket, 208, 209 ; clock, 217 ; durabil- 

 ity of, 217; knapsack, uses of, 208; 

 semi-rotary, 215-217 ; types of, 213-220. 



Pumpkin, powdery mildew, 314, 352. 



Pupa of insects, 228. 



Pyrethro-kerosene emulsion, 156. 



Pyrethrum, 52 ; and alum, 116 ; intro- 

 duction of, 78 ; preparation, 163, 164 ; 

 uses of, 164, 165. 



Pyrolignic acid, 52. 



Quassia, 15, 17, 18, 165 ; and soap, 165, 

 166. 



Quicklime, 11, 12 ; chemistry of, 156. 



Quince, black rot, 353 ; blight, 334, 353 ; 

 enemies and diseases, 353-355; fruit 

 spot, 353 ; insects affecting, 355, see 

 also Apple ; leaf blight, 334, 353 ; spot, 

 853 ; ripe rot, 240, 354 ; rust, 111, 354. 



Eadclyffe, W. F., quoted, 17. 



Radish, insects affecting, 355; see Cab- 



Railroad-worm, of apple, 257. 



Rain, action of on fungicides, 47. 



Raspberry anthracnose, 101, 355; cane 

 borer, 357 ; rust, 355 ; enemies and dis- 

 eases, 355 358 ; orange rust, 355 ; red 

 rust, 856 ; sawfly, 357 ; slug, 357. 



Rattles, grape, 304. 



Raupenleim, 250. 



Read's syringe, 188. 



Red oxide of mercury, 52 ; rust, cran- 

 berry, 279 ; raspberry, 356 ; spider, 10, 

 821 ; treatment of, 310 ; spotted mite, 

 on orange, 321. 



Resin and soda wash, 172 ; compounds 

 and arsenicals, 136 ; first use of, 85-87 ; 

 soap, preparation of, 166 ; washes and 

 arsenicals, 169 ; Bordeaux mixture, 

 136 ; kerosene emulsion, 136. 



Resin washes, preparation and use of, 

 166-169. 



Rhopobata vacciniana, 280. 



Rig for spraying, 218-220. 



Riley, C. V., in France, 51 ; mentioned, 

 68; quoted, 59, 60, 61, 64, 85, 203; 

 Hubbard kerosene emulsion, 155 ; noz- 

 zle, 203, 294; on kerosene emulsion, 

 81. 



Ripe rot, apple, 240 ; grape, 305 ; quince, 

 240, 354. 



Robertson, John, quoted, 10. 



Rcestelia aurantiaca, 354; pirata, 

 242. 



Root-maggot, cabbage, 268 ; treatment 

 of, 135; rot, beet, 264; worm, south- 

 ern corn, 283. 



Rose, black spot, 102, 358; bug, 362; 

 chafer, 362 ; enemies and diseases, 358- 

 363; leaf blight, 358; hopper, 363; 

 spot, 358 ; mildew, 359 ; and copper 

 sulphate, 17 ; Phragmidium, 360 ; rust, 

 102, 361. 



Rose, used for spraying, 198. 



Rosette, peach. 332. 



Rot, bitter, grape, 305; black, quince, 

 358 ; sweet potato, 368 ; brown, grape, 

 300-302 ; peach, 328 ; plum, 339 ; cran- 

 berry, 279 ; fruit, peach, 328 : gray, 

 grape, 300-302 ; plum, 328, 343 ; potato, 

 347 ; grape, 305 ; tomato, 370. 



Rubber in pumps, 208. 



Rue, 4, 5, 8. 



Rumsey & Co., mentioned, 189, 190, 191, 

 199. 



