32 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 LEAF” -FI-NICOTINE 0 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. | 
‘BLACK LEAP 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. 
Balbir atin os het ce WEEE hl SNe a ae ta $ 1.80 
2 aN: ae LIU See ce tee ee nt ne ee 4,75 
BO albert ee eae ee ee 8.75 
1O0RTbeerdrum te eae eh ee ene 16.75 
“Black Leaf” products are sold by seedsmen, hardware 
stores, drum stores, general merchants, and dealers in hor- 
ticultural supplies. 
TOBAGGO BY-PRODUCTS & CHEMICAL 
CORPORATION 
(Incorporated) 
LOUISVILLE, KENTUCKY 
