92 INJURIOUS INSECTS OF 1904. 



Mr. Robert Wedge, who did considerable work against the hop- 

 per in Southern Minnesota last summer, under the writer's direc- 

 tion, reports that this insect's attacks are least apparent on the 

 Northwestern Greenings, and most evident on the Repka, Charla- 

 moff, Lyman, Minnesota and Transcendent, these five varieties being 

 about equal sufiferers. After the Repka, according to this cor- 

 respondent, Scott's Winter appears to be quite badly affected, and 

 then in diminishing ratio. Patten's Greening, Early Strawberry, 

 Sweet Russet, Malinda, Longfield, Duchess, Hibernal, Wealthy, 

 Whitney, Peerless, Anisim. 



USES TO WHICH THE ABOVE CART MAY BE APPLIED. 



The pictures of this spraying machine illustrate what may be 

 the steps in the evolution of something of special adaptation to the 

 needs of all tree growers. As it is now constructed it can be used 

 with Kero-water mixture, or kerosene emulsion, or lime and sulphur 

 spray, or resin wash, or Paris green, in short, with any of the 

 >prays commonly used by nurserymen or orchardists against plant 

 lice, leaf hoppers, caterpillars, scale, and other leaf-eating or sap- 

 sucking insects. It is so large that it is adapted particularly to 

 large nurseries on level ground. The expense of its construction 

 would place it perhaps out of reach of the small growers, but never- 

 theless a number of nurserymen of the same locality could share the 

 expense and the advantages of such a machine with considerable 

 profit. Further, the possibilities foreshadowed in the success of this 

 cart as a sprayer are practically unlimited. A cart to straddle one 

 row and spray the straddled row and the two adjoining rows could, 

 in the opinion of the writer, be easily constructed. These carts, too, 

 including the one we are now using, could be made automatic by 

 connecting the pumps by proper gearing with the wheels. 



This work against the leaf hopper will be continued next sum- 

 mer, and begun at the very first appearance of the insect. 



SPRAYING AND SPRAYING MACHINERY. 



This is a hackneyed subject in many states where fruit raising 

 plays an important role, but has never been thoroughly discussed 

 in Minnesota reports in the light of what we now know upon this 



