BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 
245 
1736. Riley, C. V.—Continued. 
12. Remedies: Means of Coping with the Insect—C ontinued. 
The Ewing brushing machine, 50—The Helm brushing machine, 
51—The Wood-Smith brushing machine, 52—The Iske brush¬ 
ing machine, 53—Use of kerosene and coal oil with shallow 
pans or cloth frames, 54. 
Poisoning the worms. 54 
Impetus given to invention by the use of mineral poisons, 54— 
Value of concerted action, 54—General principles to be ob¬ 
served in poisoning, 55—Dry vs. wet applications, 55—Advant¬ 
age in being prepared, 55. 
Arsenical compounds.•-. 55 
Their value, 55—Safe and harmless where carefully used, 55— 
Caution necessary, 56—Antidote to arsenic poison, 56—Paris 
green, 56—When first recommended against the cotton-worm, 
56—Its value, advantages, and disadvantages, 56—Modes of 
using it, 57—Patents issued for Paris green mixtures, 57—They 
should be disregarded, 58—Arsenic, 58—It causes the squares 
to fall, 58—Patent granted for its use in 1871, 59—Johnson’s 
dead shot, 59—Arseniate of soda, 59—Texas cotton-worm de¬ 
stroyer, 60—Lodi pest poison, 60. 
London purple.:. 60 
Its nature, and how produced, 60—Its efficacy as an insecticide, 
60— Analysis of, 60—It proves a valuable poison for the worms, 
61— Cheaper than Paris green, 62—Its persistency, 62. 
Pyrethrum powder. 62 
Its origin and nature, 62—Its remarkable insecticide qualities, 
62— Most effectual on the cotton-worm, 63—Perfectly harmless 
to man, 63—The extract of the plant has the same virtue, 63— 
Growth of the plant in California, 63—Experiments conducted, 
64—The alcoholic extract very potent, 64—Probable cost of 
using it, whether as powder or extract, 65—Highly encouraging 
prospects from its use, 65. 
Kerosene oil... 65 
It causes instant death to the worm, but is difficult to apply 
without injuring the plant, 66—Vaporized by means of steam, 
66—Used as a soap, 66. 
Cotton-seed oil. . 66 
Acts much as kerosene, 66—Made into soap with ashes from hull 
of seed, 66—Might be profitably used arouud oil factories, 66. 
Carbolic acid.„. 67 
As a means of keeping off the moth, 67—Will not kill the worm 
without injuring the plant, 67. 
Sulphur. 67 
Extracts or decoctions from various plants. 67 
Yeast ferment; fungus infection. 68 
Proposition by Dr. Hagen, 68—Dr. Bail’s experiments, 68—Not 
in accord with the leading mycologists, 68—Experiments with 
beer-masb, 69—With beer-mash and yeast ferment, 70. 
Machines and contrivances for powdering. 74 
Simple contrivance for mixing, 74—Ordinary method of apply¬ 
ing dry poison, 75—Patented machines, 75—Hand duster, 75— 
The Willie duster, 75—The Hurd blower, 76—Combined duster 
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