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Hand Spraying Machines. 



The hand sprayer is suitable for use in gardens and 

 in places where a small breadth of potatoes is grown, 

 but where a large acreage is planted the horse-power 

 machine is more suitable, and can be worked more 

 profitably. With a hand machine, a man can spray 

 from one to two acres per day, according to the size 

 of the crops and the quantity of the solution to be 

 applied, if the solution is prepared for him. With a 

 horse machine taking seven drills at once, upwards of 

 twenty acres may be dressed in a day. A great 

 advantage of the horse machine is that a large acreage 

 may be rendered secure against the disease in a very 

 short time, and as the outbreaks of disease are very 

 sudden in their appearance, and they spread through- 

 out a field with almost incredible rapidity, the im- 

 portance of being able to spray a large quantity in a 

 short time is readily understood ; especially as the 

 dressing prevents, rather than cures the disease. To 

 render the crop safe, the dressing should be applied 

 before the disease is noticeable, or before the weather 

 is such as to render it probable -that a serious attack 

 may be expected. But while the weather keeps fine 

 the disease appears to be a long way oif ; and, as the 

 plants are growing, there is an inducement to postpone 

 the work, because the longer it is delayed the necessity 

 of dressing again is delayed also. 



Preparations for Spraying. 



In making preparations for spraying, it is important 



