New York AGRICULTURAL EXPERIMENT STATION. 689 
the most of them were kindly furnished for testing oy the manu- 
facturers, free of charge. The merits and demerits of each 
machine will be pointed out as they appear from actual use in 
the field. A few of the vineyard and orchard spraying machines 
and apparatus that have come to our notice as having special 
merit will also be described. It is hoped that the accompanying 
descriptions and illustrations will help farmers, gardeners and 
fruit-growers to make a more intelligent selection of a sprayer 
best adapted to their needs. 
KNAPSACK SPRAYERS. 
Knapsack sprayers (see figure 9), as the name indicates, are 
machines designed to be carried on the back. These are manu- 
factured by a number of firms; the later patterns differ from 















































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Fia. 9.— The Garfield Knapsack Sprayer. 
each other only in small, but occasionally very essential details. 
In general, knapsacks consist of a copper tank, holding from 
three to five gallons, being held in place on the back by straps 
87 
