30 THE FLORIDA ENTOMOLOGIST 
TRY NICOTINE SULPHATE 
A correspondent writes that his cucumbers are troubled with 
“‘yeapus.” 
Niagara Orchard Duster 
5-h. p. water cooled motor, and 
special orchard wagon. Weighs 
1000 lbs. complete. Crop attach- 
ment for dusting potatoes and cel- 
ery can be supplied. 
Niagara Sulfodust 
A finely ground sulphur contain- 
ing a special spreader and sticker. 
It has long been acknowledged as 
one of the best standard fruit dust 
fungicides, also for use in citrus 
groves to protect against rust mite 
and red spider. 
For further information on Nia- 
gara Dusts and Dusters write our 
Florida distributor 
PENINSULAR CHEMICAL CO. 
Orlando, Fla. 
DUSTING costs less than h- 
‘ quid spraying. Dust- 
ing materials cost more than ma- 
terials for liquid spraying, but 
this is more than counterbalanced 
by the big saving in time and labor, 
less cost of the duster, and much 
smaller depreciation, repairs and 
operating cost. 
Dusting differs from spraying 
chiefly in that Insecticides and 
Fungicides are applied in a pow- 
dered form; dry instead of wet. 
Water merely carries the active 
ingredients to the plant, where it 
evaporates and leaves a dry pow- 
der. Spraying requires 50 lbs. of 
water to carry 1 lb. of poison to 
the foliage. In dusting air is the 
carrier; it is ever present and does 
not have to be pumped and carried. 
The chemicals used are funda- 
mentally the same with either 
product. 
NIAGARA SPRAYER COMPANY 
Middleport, N. Y. 
Jacksonville, Fla. 
Printing for All Purposes 
Carefully Executed 
Delivered on Time 
Pepper Printing Company 
Gainesville, Florida 
When writing to advertisers mention The Florida Entomologist 
