ANNUAL REPORT. 201 



iov the small back-yard t^ardcn. They may be purchased at 

 from $3 to $8. 



Knapsack Outfits. Such cnitfits are made to attach 

 on tlie back of the operator and hold about live gallons. Out- 

 fits made entirely of brass and copper may be purchased at 

 from $10 to $15. They are very useful on small plantations 

 and in greenhouses. Some growers claim that young fruit 

 trees may be sprayed more economically with the knapsack 

 than with any other outfit. Some provision should be made 

 on such outfits to prevent the drip from the plunger rod from 

 running down the back of the operator. A deep gutter with 

 an opening through which the liquid runs back into the tank, 

 is provided on some outfits. 



There are now on the market several small compressed- 

 air outfits of about three or four gallons capacity and costing 

 about $5 to $10. A few strokes of the piston is sufficient to 

 produce a spray lasting several minutes. They are of the 

 same general usefulness as the knapsack outfits. 



Hand Cart Outfits. The capacity of such outfits is 

 usually from 20 to 30 gallons. They are especially useful in 

 vegetable gardens and in places inaccessible to wagons. Such 

 outfits are often useful for watering plants. They consist 

 usually of a small tank or barrel on a two-wheeled truck and 

 are drawn around by hand. Some of smaller capacity are 

 erected on a wheelbarrow. Whether on one or two wheels, 

 they are very difficult to haul over soft ground. In vegetable 

 gardens the crops likely to require spraying should be planted 

 so as to accommodate a barrel outfit in a horse cart, or one 

 of the regular horse-power sprayers. 



Barrel Outfits. These outfits consist of a pump mount- 

 ed on either side of a barrel. They are used both for vege- 

 table garden and orchard spraying. The outfit may be car- 

 ried about on a common wagon or cart or on a stone boat or 

 sled. An outfit with the pump on the side of the barrel is pre- 

 ferred for the reason that it is less likely to interfere with the 

 branches while driving through the orchard, and also for tlie 

 reason that the mixture is more easily agitated. Such outfits 



