TABLE OF CONTEXTS. 
VII 
Page. 
Remedies; means of coping wrrn the insect, etc. — Continued. 
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, 18*2 — mode of pre- 
paring the extracts and diffusions, 18.3 — list of the plants experimented 
with, 184 — effect of alcohol upon the worms, 187 — yeast ferment and fun- 
gus infection, 188 — Dr. Hageu'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 XL 
MACniNERY AND DEVICES FOR THE DESTRUCTION OF TOE WORM. BY PROF. W. 
S. Barnard, Ph. D 191 
L Spray nozzles, classification, preferred kinds, 191 — Many-punctured 
nozzles, 191-4) — preferred construction, 191-3 — straining and cleaning vs. 
clogging, 192 — Eddy-roses, their operation, construction, and leading im- 
portance, 192-3 — Plng-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'a, Warner's, improvements, 19.*) — Divided rose-heads, clutch- 
head of Mast, Foot & Co., Foss', Fox's, Barrows', Vose's, 195 — Peripheral- 
roses [divided], Melcher's, Yeager's, Rnhmann's, 19(5 — Rose-combinations 
of Barry, Prentice, &c, 190 — Slot nozzles, 190-205— operation, 190 — pre- 
ferred construction, 196-801 — disadvantages, improvements made, 197- 
201 — Eddy-chambered, 197-9 — lip construction, 198-9 — inside cleaner, 199 
— Simple slot-nozzles, Fowler's, Mallory's, lake's, 201-202— Ping slot-noz- 
zles, Allen's, Rnhmann'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', Rnh- 
mann's, Pinter's, 204— Stanton's, 205 — Side slots, Schier's, Melcher's, 205 
— Deflector nozzles, 200-211 — definition, use, applicability, relative merits, 
200 — drip-waste, clogging, 20(5— simple constructions made, 200-8 — con- 
formations for narrow, wide and even sprays, 200-7, — removable deflectors, 
207 — Rollings', Douglas', Nickerson's, 208 — Haydeu's, Killam's, Lewis', 
Schier's, Barrett's, 209 — Rnhmann'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, 215-210 — 
for blast-atomizers 216 — Eddy-jets proper, 210-219 — involute form, cone- 
form, 210 — convex and concave forms, 217 — direct discharge, proximal 
diagonal discharge, 217 — distal diagonal discharge, 218 — centrifugal nose- 
pieces, double-coue or double-chambered form, and chambered plug form, 
218 — direct spray and solid jet, 219 — Fixtular spray nozzles, hose-pipes, 
219— with rotary segment, Hotz's, Clifford's, Gielow's, Johnson's, Hover's, 
Clarke's, 220— with cross-plug, MeGafYey's, Johnson's, Gray's, Gielow's, 
Hosford's, 221— Spray-wheels, 221.— II. Centrifugal Throwers, 221-220 
— 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, 22:3-5 — with powder, 224— a simple brush 
thrower of powder, 224-5 — advantages over sifters, velocity of rotation, 
