CENTRAL EXPERIMENT STATION. 



181 



the water to the land, and it is then distributed by means of V- 

 ahaped wooden troughs, which are shown in the illustration, with 

 holes so arrang^ed that they suppl}' several rows with water at one 

 time, which is often a jrreat advantage in irri^atinj»f. In this case 

 the water is pumped into an elevated reservoir which connects with 

 the system of pipes in the j;^arden. 



SPRAY PUMPS 



The demand for good spraying' apparatus has generally been well 

 met by manufacturers, and there is now on the market a great vari- 

 ety of pumps, tanks and nozzles, from among whicji it would seem 

 that almost any one could find an outfit suited to his needs. In se- 

 lecting spraying apparatus, we found no trouble in getting a 

 knapsack spray pump adapted to our wants, but we needed a more 



mm 



Harrel ."^pray I'litnp. 



powerful pump, such a one as could be used successfully in spray- 

 ing plum, apple and ornamental trees in a small way. Such a device 

 is shown in the figure and is described as follows: The essential 

 parts are a good hardwood barrel, such as a linseed oil barrel, 

 mounted on and securely fastened to a light framework of oak. On 

 the barrel and at one end is mounted a powerful force pump with 



