Spraying Apparatus. 

 The work of testing the various kinds of spraying apparatus has 

 been continued, with the results that we find notliing that better 

 answers the purpose for general work than the pumps and nozzles 

 made by the large pump manufacturers in various parts of the 

 country. 



Fungicides and Insecticides combined. 

 Again the value of the use of combined fungicides and insecti- 

 cides has been demonstrated in securing a fine crop of grapes, 

 cherries, plums and apples, free from injury by insects or fungous 

 growths. / 



The Entomological Division. ^ 



During the past season a series of experiments has been con- 

 ducted with various insecticides on the gypsy moth and tent cater- 

 pillar, for the purpose of determining which insecticide would 

 prove the most efficacious and also the least injurious to the leaves 

 of the trees. 



The insecticides used in these experiments were Paris green, 

 Paris green and lime, arsenate of soda, arsenate of lead and 

 Oriental Fertilizer. 



Paris green gave results similar to those which had been ob- 

 tained with it in previous years. The object in repeating experi- 

 ments with this insecticide was to verify those made on the gypsy 

 moth for three years past. Strange as it may seem, gypsy cater- 

 pillars, when half grown or larger, are not destroyed by any pro- 

 portion of Paris green in water that can be used on fruit trees 

 without injury to the foliage. 



Experiments with Paris green and lime have been made at some 

 of the stations, and it was reported that this mixture permitted a 

 larger proportion of Paris green to be used without injury to the 

 foliage. This, however, did not prove true in the experiments 

 made here, and they were also repeated with the same results in 

 the field at Maiden. 



Arsenate of soda was tried in varying proportions, but invari- 

 ably injured the foliage, except when used in such small propor- 

 tions as not to kill the caterpillars on the trees. 



The Oriental Fertilizer, a preparation for sale by a firm in 

 Chicago, was tried, but, when used in the proportion recommended 

 by the manufacturers, injured the foliage, and when used in smaller 

 proportions did not destroy the caterpillars. 



The experiments with arsenate of lead proved very satisfactory 

 in some respects, for it did not injure even the most delicate 



