16 THE FLORIDA ENTOMOLOGIST 
“BLACK LEAF 40” 
(Sulphate of Nicotine—40% of Nicotine) 
For liquid spraying against aphis, thrips, leaf-hoppers, 
etc. May be combined with other standard spray-chemicals. 
Always dependable and efficient. 
“Black Leaf 40” is, in Very Truth, “The Old Reliable’ 
PRICES 
“BLACK LEAP”-FI-NICOTINE DUST 
Contains Over 114% of Actual (“Free’’) Nicotine 
Made from our own high-strength (“Free”) Nicotine. 
Thoroughly standardized as to strength and texture. Rec- 
ommended for dusting vegetables to destroy aphis. 
PRICES 
F. O. B. Richmond, Va. | 
Beals tats 2c 2 ose Pel ae pee Mean es EAD $ 1.10 | 
PASE Al} ops so bab 0 ieee ie Sth a PO ae ne Nee ner ae 3.75 | 
5O=Ibsevarumnt Ait Sst eee eee 6.75 | 
MOONS. Gir tit ees Ae Ee ee 1275 | 
“BLACK LEAF”- F NICOTINE DUST 
Contains Over 2% of Actual (“Free”) Nicotine | 
Is stronger in nicotine than our—F1—Dust, but other- 
wise, is the same. Recommended against the more resistant | 
insects, suck. as cucumber beetle, pea aphis, ete. | 
PRICES | 
F. O. B. Richmond, Va. 
Bal beyittins eo at he a eure $ 1.30 
Z20-lb2canume: sels & le) Lae ee ee 4.75 
5O= lay ee Ue a hee es ee 8.75 | 
MOORS y* Ory 2 ee ee ns ee 16.75 | 
“Black Leaf” products are sold by seedsmen, hardware 
stores, drum stores, general merchants, and dealers in hor- 
ticultural supplies. 
ASK YOUR DEALER 
TOBACCO BY-PRODUCTS & CHEMICAL 
CORPORATION 
(Incorporated ) 
LOUISVILLE, KENTUCKY 
