TABLE OF CONTENTS. VII 



Page. 

 Remedies; means of coping with the insect, etc. — Continaed. 



water solution, 177 — tea or decoction of pyrethrum, 178 — effect of pyre- 

 thrum upon other insects, 179— prospects for the use of pyrethrum for the 

 cotton-worm, 180 — ox-eye daisy powder and its uselessness as an insecti- 

 cide, 180 — extracts and decoctions from various plants, 181 — difficulties 

 in the way of discovering new vegetable insecticides, 182 — mode of pre- 

 paring the extracts and diffusions, 183 — list of the plants experimented 

 with, 184 — effect of alcohol upon the worms, 187 — yeast ferment and fun- 

 gus infection, 188 — Dr. Hagen's recommendations of the use of yeast as 

 an insecticide, 188— objections to Dr. Hagen's plan, 189 — negative results 

 obtained by the Commission, 190. 



CHAPTER XI. 



Machinery and devices for the destruction of the worm. By Prof. W. 



S. Barnard, Ph. D 191 



I. Spray nozzles, classification, preferred kinds, 191 — Many-punctured 

 nozzles, 191-6 — preferred construction, 191-3 — straining and cleaning vs. 

 clogging, 192 — Eddy-roses, their operation, construction, and leading im- 

 portance, 192-3 — Plug-roses, action and construction unsatisfactory, 193- 

 4 — Johnson's, Melcher's, Dawson's, Foster's, 193— Lynch's, 194— Colliding 

 jets, gas-jets, superiority, Daughtrey's, Weber's, Prouty's, 194 — T -roses, 

 194 — Yeager's, Warner's, improvements, 195 — Divided rose-heads, clutch- 

 head of Mast, Foos & Co., Foss', Fox's, Barrows', Vose's, 195— Peripheral- 

 roses [divided], Melcher's, Yeager's, Ruhmann's, 196 — Rose-combinations 

 of Barry, Prentice, &c., 196 — Slot nozzles, 196-205 — operation, 196 — ^pre- 

 ferred construction, 196-201 — disadvantages, improvements made, 197- 

 201 — Eddy-chambered, 197-9 — lip construction, 198-9 — inside cleaner, 199 

 — Simple slot-nozzles, Fowler's, Mallory's, Iske's, 201-202 — Plug slot-noz- 

 zles, Allen's, Ruhmann's, Johnson's, "The Niagara," Pinter's, 202 — Re- 

 movable slots of Long, Vestal, and Merigot, 203 — Jawed slots, '' The Boss 

 Nozzle," Raymond's and Perkin's, Smith's, Moffet's, 203 — Williams', Ruh- 

 mann's, Pinter's, 204 — Stanton's, 205 — Side slots, Sewer's, Melcher's, 205 

 — Deflector nozzles, 206-211 — definition, use, applicability, relative merits, 

 206 — drip-waste, clogging, 206 — simple constructions made, 206-8 — con- 

 formations for narro Wj wide and even sprays, 206-7, — removable deflectors, 

 207 — Hollings', Douglas', Nickerson's, 208 — Hayden's, Killam's, Lewis', 

 Schier's, Barrett's, 209 — Ruhmann's, Binkley's, Schier's compound, 210 

 — Schier's and Polansky's, 211 — Centrifugal nozzles, 211-221 — operation, 

 kinds, choice, 211 — the new and most perfect sprayers, 212 — Eddy-cham- 

 bered, 212-219 — conformation and operation, 212 — clogging, cleaning, con- 

 struction principles, 213 — forms described, 214 — Whistle-jets, 215-216 — 

 for blast-atomizers 216 — Eddy-jets proper, 216-219 — involute form, cone- 

 form, 216 — convex and concave forms, 217 — direct discharge, proximal 

 diagonal discharge, 217 — distal diagonal discharge, 218 — centrifugal nose- 

 pieces, double-cone or double-chambered form, and chambered plug form, 

 218— direct spray and solid jet, 219 — Flstular spray nozzles, hose-pipes, 

 219— with rotary segment, Hotz's, Clifford's, Gielow's, Johnson's, Hoyer's, 

 Clarke's, 220 — with cross-plug, McGaffey's, Johnson's, Gray's, Gielow's, 

 Hosford's, 221— Spray- wheels, 221.— II. Centrifugal Throwers, 221-226 

 — their character and operation, 221 — Rotated orifices. Pronged reels. 

 Brush poison-throwers, 222 — brush fibers, 222-3 — rotary polishing brushes, 

 improved construction, fiber-strength, spring and density, 223 — feeding 

 the brushes with liquid, 223-5 — with powder, 224 — a simple brush 

 thrower of powder, 224-5 — advantages over sifters, velocity of rotation. 



