24 NEW YORK STATE MUSEUM 



moved from place to place (pi, 6). In most cases this takes the 

 form of a box or barrel to which a force pump is firmly attached, 

 and is either provided with wheels or designed to be placed in 

 a wagon. It is necessary to have 25 to 50 or more feet of ^ or 

 ^ inch hose when spraying tall trees, while the addition of a 

 10 to 25 foot metal extension adds materially to the value of the 

 apparatus. It is also necessary to have a good nozzle that will 

 not clog, but will produce a fine spray and can be quickly ad- 

 justed to throw a coarse spray some distance if necessary. 

 Such an outfit is of great service to any individual having con- 

 siderable spraying to do and it could undoubtedly be used to 

 advantage by those desiring to make a business of spraying in 

 a small way, as for example the treating of trees here and there 

 for those in cities wishing their trees sprayed and not willing 

 to purchase the necessary apparatus. 



In the extended work against this insect conducted hj cities 

 and villages it is desirable to have apparatus that will admit 

 of more rapid work. This has led to the refitting of retired fire 

 engines and the designing of more or less cumbersome outfits 

 for the purpose. In all cases these makeshifts have been suc- 

 cessful, though they are not so satisfactory in operation as 

 those specially fitted for the purpose. One of the best forms 

 of apparatus yet designed for spraying trees is that constructed 

 under the direction of Dr E. B. Southwick, entomologist of the 

 department of public parks of the city of New York. This is 

 the form used in Albany. The whole outfit is represented on 

 pi. 5. It consists of a Daimler gasoline motor operating a 

 Gould force pump. The motor and pump, weighing but 300 

 pounds, can be placed in the bottom of a spring wagon along 

 with the 100 gallon tank containing the poisonous mixture. 

 This motor has the advantage of being almost noiseless in 

 operation and is scarcely noticed by passing horses. It is very 

 inexpensive to operate, as a gallon of gasoline is suflicient for 

 a day, and it requires so little attention that a tyro can run it. 

 The smallest size Gould three piston pump is the one used with 

 the motor, though Dr Southwick now recommends a larger one 



