EXPERIMENT STATION REPORT. 587 



previous and a single egg mass was found. This was taken to 

 the laboratory to determine its condition, but as nothing emerged 

 the eggs apparently were dead and this proved to be the case upon 

 examination. The killing may have been due to the severe win- 

 ter and if that was the case it is probable that many of the egg 

 masses in other localities suffered similarly and this would mean 

 that the establishment and distribution of this insect in the State 

 had received a check. 



In all, the egg masses have been distributed in severiteen differ- 

 ent localities, four of which received them for two years. This 

 has given a variety of conditions and situations under which the 

 insect might develope and become a fixture. 



RECORD OF EXPERIMENTS MADE IN THE MARSH ORCHARD. 



Early in 1904, I arranged with one of my assistants in the 

 mosquito investigation, Mr. Harold O. Marsh, for a series of 

 experiments with Insecticides, to be carried on in the peach 

 orchard of his father, Mr. George O. Marsh, near Chester, Mor- 

 ris count}^ I had seen the orchard personally and knew it to be 

 badly infested with scale; so badly that a considerable number of 

 trees were already dead or dying, and others had considerable 

 dead wood. The trees had passed the winter fairly well and there 

 was some fruit prospect, but altogether, conditions were such that 

 if radical measures were not adopted, the orchard was doomed. 

 As Mr. Marsh had not intended to adopt these active measures 

 himself, and as my experimental work promised at least a 

 measure of relief he assented readily to my request. 



The outfit for the first experimental applications consisted of 

 a Gould Bucket Pump with additional lengths of hose and a bam- 

 boo spraying rod ; but this was almost immediately replaced by 

 a Deming "Gardener's Choice" outfit, consisting of a half barrel 

 tank on a pair of iron wheels, moved by a hollow iron handle. 

 The pump was mounted on the tank over the iron support, and 

 altogether this proved a very practical outfit for sloping orchard 

 work, on trees not over 15 feet high in any case. We had Ver- 

 morel, Mistry and Bordeaux nozzles, but the Vermorel was 

 chiefly used. Additional lengths of hose brought the amount up 

 to 20 feet, and the bamboo spray rod supplied for the bucket 

 pump was transferred to this outfit. 



The actual spraying was done, first by Mr.E. L. Dickerson, 

 my assistant as State Entomologist with Ha.vM O. Marsh at the 

 pump, and afterward by Harold with such assistance as could be 



