400 Report of the Mycologist. 



strainer. There need be no difficulty in getting Bordeaux mix- 

 ture througli the strainer if the Bordeaux is properly made. 

 First of all, see that the barrel in which the Bordeaux is to be 

 mixed is free from sticks and dirt — rinse it well. Always strain 

 the lime water and if there is dirt in the water, strain it also. 

 With proper management this straining process need not con- 

 sume much time and in the end there will be a great saving of 

 time. Avoid a great excess of lime in the Bordeaux. 



(2) At the close of each day's work pass a small quantity of clean 

 water through the nozzles and rinse the barrel. — This should always 

 be done but is most important when Paris green is used with the 

 Bordeaux mixture. 



DIRECTIONS FOR SPRAYING POTATOES ON' LONG 

 ISLAND. 



Spray every season. Begin when the plants are from six to 

 eight inches high and spray once every two weeks as long as the 

 plants continue green. If heavy rains occur it may be necessary 

 to spray somewhat oftener, particularly in seasons when late 

 blight is prevalent. Use Bordeaux mixture of the l-to-8 formula; 

 that is, use one pound of copper sulphate for every eight gallons 

 of Bordeaux mixture. When Colorado potato-beetles or flea- 

 beetles are abundant add Paris green to the Bordeaux mixture 

 at the rate of three-fourths of a pound of Paris green to 50 gal- 

 lons of Bordeaux mixture. Spray thoroughly. If a sprayer with 

 stationary nozzles is used there should be two nozzles per row in 

 the first three spraying and three nozzles per row in all subse- 

 quent sprayings. It is, however, sometimes difficult to arrange 

 the nozzles so that three per row can be used with advantage. 

 In such cases it may be advisable to use, instead, two nozzles per 

 row and go over the plants twice in opposite directions. By all 

 means, spray thoroughly in the latter part of the season. 



This treatment can be depended upon to prevent early blight 

 and late blight or rot, keep off Colorado potato-beetles and con- 

 siderably reduce the amount of damage done by flea-beetles. 



