348 OHIO EXPERIMENT STATION: BULLETIN 332 



PLATE IX 



SOLID STREAM SPRAYERS 



Fig. 1. — A spraying machine of the solid stream type. Such machines will 

 throw a stream nearly 100 feet in the air, hence the tallest trees may be sprayed 

 with the operator standing on the ground. Because of the rapidity with which 

 work may be done, thus minimizing labor costs and the more perfect work 

 possible with machines of this class, they are by all odds the most satisfactory 

 for use in shade, park and forest tree spraying. Two machines of this type 

 are in use in Ohio, one by the city of Cleveland and one by the village of Brat- 

 enahl, a suburb of Cleveland. 



Photograph, Fitzhenry-Guptill Co. 



Fig. 2. — A motor-driven solid stream sprayer. The motor in the chassis 

 not only furnishes power for traction but runs the spray pump as well; more- 

 over, the spray pump may be engaged as the truck moves along, thus affording 

 a very efficient and speedy method for spraying low-lying shrubbery and 

 bushes along highways. When the sprayer is not needed it may be disengaged 

 and demounted and the truck used for other purposes. This machine is used 

 by the State Forester's Department of Massachusetts in gipsy and brown tail 

 moth control. 



Photograph, Fitzhenry-Guptill Co, 



