20 



making the applications as described for Bordeaux mixture and the 

 other well-known preparations. 



Another preparation which might be tried for downy mildew is made 

 as follows : 



Dissolve 5 pounds of alum in 3 or 4 gallons of boiling water, and 

 then pour this solution into a half barrel or tub containing sufficient 

 cold water to make 15 gallons. In another vessel dissolve 42 pounds 

 of calcium chloride in 3 gallons of cold water. Finally, pour the cal- 

 cium chloride solution slowly into i^he alum preparation, stirring con- 

 stantly to eifect a thorough mixing. 



When the two solutions are mixed there is formed aluminium chloride, 

 potassium sulphate, and calcium sulphate. It is claimed that the fun- 

 gicidal property lies in the first, while the calcium sulphate facilitates 

 its adhesiveness. The potassium sulphate is, as every one knows, a 

 fertilizer and as it is washed from the leaves it enriches the soil. 



In addition to what is said here the papers of Professor Goff and 

 Professor Chester should be carefully consulted, fis they contain several 

 new and important suggestions in regard to the preparation and ap- 

 plication of fungicides. For the benefit of those having in mind the 

 treatment of plant diseases the coming season, we quote below the usual 

 prices of the various chemicals used in the preparation of fungicides. 

 The quotations are for 100-pound lots. In smaller quantities the prices 

 will range from one fifth to one- third higher, so that money will be saved 

 if farmers and fruit-growers will club together in making their pur- 

 chases. Such an arrangement will also save considerable in the way 

 of transportation expenses. 



Copper carbonaite 



Copper sulphate 



Potassium sulphide 



Aqua ammonia (22 Beanm6) 



Sodium hyposulphite 



Copper acetate 



Per 

 pound. 



$0.60 

 .08 

 .25 

 .08 

 .03 

 .30 



Iron sulphate 



Flowers of sulphur . . 

 Alum 



Calcium chloride 



Aluminium sulphate 

 Lime per barrel 



Per 

 pound. 



$0.02 

 .04 

 .03i 

 .06 

 .05 

 2.00 



NEW SPRAYING PUMP. 



Ever since the work of the Section was inaugurated there has been 

 felt the need of a cheap, serviceable, and effective apparatus for spray- 

 ing grapes and all the low-growing crops. Heretofore we have had to 

 rely mainly upon machines imported from France; in fact, with but one 

 exception, the only pumps that have given satisfaction in our vineyard 

 work have been purchased abroad. The average fruitgrower can not 

 afford to send to France for a machine that will cost him, laid down in 

 this country, all the way from $18 to $25, nor can he pay $21 for a pump 

 made here, notwithstanding the fact that it is a most excellent machine 

 and costs almost the selling price to manufacture it. In short, a knap- 



