New York Agricultural Experiment Station. 381 



were such as we would recommend for actual farm practice. We 

 sprayed five times* with Bordeaux mixture, l-to-8 formula, com- 

 mencing when the plants were about six inches high and repeat- 

 ing the treatment at intervals of about tvv'o weeks. Whenever 

 Colorado polato-beetles or flea-beetles became numerous, Paris 

 green was added to the Bordeaux mixture at the rate of three- 

 fourths of a pound of Paris green to 50 gallons of the Bordeaux 

 mixture. The copper sulphate was purchased directly from the 

 manufacturer in New York in quantity (450-pound-barrel), at i-l 

 cents per pound. The spraying outfit used is shown in Plate 

 XIV. It consisted of an Eclipse No. 2 spray-pumpf mounted in 

 a 70-gallon barrel which was put on a stout two-wheeled cartt 

 having wheels five feet eight inches apart and hauled by one 

 horse. By means of a rubber hose the spray-pump communicated 

 with a three-fourths-inch iron pipe to which were attached eight 

 Deming-Vermorel nozzles, arranged in such a manner that each of 



♦The dates of spraying were June 4, June 19, July 2, July 17 and July 31. 



t Manufactured by Morrill & Morley, Benton Harbor, Mich. 



JThe cart and barrel were obtained from a Callister Paris green sprinkler, manufac- 

 tured and sold by Thomas Callister, Queens, N. Y. Many Long Island farmers are 

 familiar with this sprinkler. An ordinary 50-gallon barrel will answer the purpose jusr. 

 as well except that it will require filling oftener. Any stout two-wheeled cart having a 

 tread of about six feet can be used. A two-wheeled dump-cart will answer the purpose. 



