INSECTICIDES AND EQUIPMENT FOR CONTROLLING INSECTS 4] 
TABLE 2.—Quantities of some common insecticidal materials required for small 
quantities of sprays, based on generally accepted formulas 
With 100 
Material With 1 gallon of water With 3 gallons of water gallons of 
water 
Pounds 
Calcium arsenate_-__--__---- 3% tablespoonfuls 1______--____ 11 tablespoonfuls or 24 cup___-_-_- 4 
Wweadvarsenate:— 2 —- 22 ss = 3 tablespoonfuls__-__--------_- 9 tablespoonfuls or 4% cup_____-_- 4 
Magnesium arsenate__----_- 7 teaspoonfuls__---- SEAN pe MES @tablespooniulse ss sss ena ns 4 
IBanissereenttere) St ie Se aes 14% teaspoonfuls___----_--__-_- 14% tablespoonfuls_____-________- 2 
‘Rartal Cmehlew ae ee 14% tablespoonfuls_-__--------_- 2 ounces or 414% tablespoonfuls__- 4 
Derris powder (4 percent)___| 1 tablespoonful______--__----- Sitablespoontulss2 sss eee 2] 
5 tablespoonfuls____-__------_- 15 tablespoonfuls or 1 cup__-_-_-_-_- 35 
Cryolitee eet ase. ta oes LEAS DOOTIIU Sere eee Uatablespoonttls ss) =- seas = alies 6 
TEWSI coy se wee eS 5 tablespoonfuls_-_-_-.---__--__ ACU Reena ER Nae ne ee OS 6 
IBTOWI SUC Ans ee PACU Eee ee ee een eee 8 ounces or 12% cups____--_---__- 16 
Copper sulfate__----------.- 614 teaspoonfuls_-_-----__----_- 61% tablespoonfuls_______________ 8 
Fbydrated lime: lasses t= 6 tablespoonfuls__-...-------_- HI GUY Nees ARTA need 12 
Calcium caseinate____----__ 2 taplespoontulss ea tee sae ees D7 CUNT Sass ane aa Selon MUON te 4 
MlOURa eee ke Se 21% tablespoonfuls_----------_- ACO WG cee ye cin SY IR SA erat aa 4 
1 All measurements are level, not heaped or rounded. 
2 These dilutions give a rotenone content of approximately 0.005 percent in the completed spray. Fora 
rotenone content of 0.01 percent, the quantities given should be doubled. 
3 These dilutions give a rotenone content of approximately 0.025 percent in the completed spray. 
' TABLE 3.—Volumes of given weights of insecticidal materials, for determining 
amounts to be used for making up small quantities of sprays or dusts 
Volume of materials Volume of materials 
required to weigh— required to weigh— 
Material Material bao 
1 ounce 1 pound 1 ounce 1 pound 
Unit Cups Unit Cups 
Bentonite____________ 21% tablespoonfuls_ 214 || Magnesium arsenate__| 4 tebleswoomul 2m 4 
Brown sugar______-_-- 3% tablespoonfuls_ 34% || Mercuric chloride____| 1 tablespoonful__ 1 
Calcium arsenate_-____ 5 tablespoonfuls_ _- 5 Naphthalene_________ bs tablespoonfuls__ ze 5 
Calcium caseinate____| 224 tablespoonfuls_| —_- 224: || Nicotine sulfate_____- 5 teaspoonfuls_____ 2 
Chall kee ee a at 6 tablespoonfuls___ 6 Paradichlorobenzene _| 214 tablespoonfuls_ 2% 
Copper sulfate (pow- | 5 teaspoonfuls. ___- 1% || Paris green__._______- 1144 tablespoonfuls_ 1% 
dered). Pyrethrum powder___} 5 tablespoonfuls__- 5 
Cryolites2 23 8 teaspoonfuls___-_- 2% || Soap powder________- 6 tablespoonfuls___ 6 
Derris powder-_-----_-- 6 tablespoonfuls__- 6 Sodium arsenite_____- 14% tablespoonfuls_ 14 
GUase a meeens Bele: 4 tablespoonfuls__- 4 Sulfur (Superfine, | 24% tablespoonfuls_ 2% 
Hellebore_____-------- 5 aoe Sea 5 flowers of). 
Hydrated lime_____-_-| 3 tablespoonfuls__- 3 Sulfur (wettable)_____ 84 teaspoonfuls___ 3 
Kaolins a 4 tablespoonfuls__- 4 Martaremetices 2. 6% teaspoonfuls__-_ 2 
Lead arsenate-_-__---_-- 41 tablespoonfuls_ 414 || Tobacco dust_______-- 6 tablespoonfuls__-_ 6 
TABLE 4.—T ables of measures 
LIQUID MEASURE 
5 milliliters =1 teaspoonful. 
3 teaspoonfuls =1 tablespoonful. 
2 tablespoonfuls=1 fluid ounce. 
8 fluid ounces =1 cup. 
2 cups =1 pint. 
8 pints =1 gallon. 
EQUIVALENT QUANTITIES OF LIQUID INSECTICIDAL MATERIALS WHEN MIXING BY PARTS 
Dilution 
Quantity|___ a Ai! ney, ean 
of water 
(gallons) 1 to 400 1 to 800 1 to 1,000 1 to 1,600 
1002 2e28 Ie Quantacy sires cee (ein Geers wen eS 12.8 fluid ounces_-__---- ¥g pint. 
DAT aINe wr ae 8 fluid ounces (1 cup)--| 4 fiuid ounces (1% cup)-_| 3.2 fluid ounces_______- 2 ‘uid ounces. 
Obes Lee 1.6 fluid ounces_______- 5 teaspoonfuls___---_-- 4 teaspoonfuls__-_-__-- 21% teaspoonfuls. 
i Peek Raa 2 teaspoonfuls_________ 1 teaspoonful____--__-- 34 teaspoonful________- Y teaspoonful. 
