2o8 NEW YORK STATE MUSEUM 



Mr. Coquillett, who had conducted very successfully most of the experi- 

 ments in California for the destruction of scale insects by inclosing the 

 infested trees with tents and fumigating them with hydrocyanic acid gas, 

 was intrusted with the operations for destroying the scale in Charlottes- 

 ville by the same method — always effective when properly conducted. 

 It appears in his report submitted {loc. cit.^ pp. 324-326), that 326 trees 

 and shrubs were subjected to the gas treatment. Examinations made a 

 few months thereafter disclosed no living scales. 



In Maryland. — In March, 1894, the scale was sent to the Division of 

 Entomology on peach twigs from a large peach orchard in Riverside, 

 Charles county, Md. It was learned that the scale had been introduced 

 in 1887 and 1888, on peach trees purchased of a New Jersey nursery. 

 Many of them had died, and nearly all of those that remained were 

 found to be thoroughly encrusted with the scale, so that at the time of 

 examination they were being taken up and destroyed. (Other trees to 

 which the scale had spread, had been treated by their owner during the 

 preceding winter, apparently with good results, with the three principal 

 winter washes, viz., strong kerosene emulsion; lime, salt, and sulphur; 

 and resin wash.) A trunk-washing in April with strong kerosene emul- 

 sion was successful to the extent of killing 90 per cent, of the scales. 

 Several sprayings were made during the summer with different mixtures — 

 some of them under the direction of Mr. Coquillett — by which most of 

 the scales were killed. At the time of Mr. Howard's report (from which 

 most of these items' relating to the eastern presence of the scale have 

 been drawn) in August, it was thought safe to say that the insects would 

 be completely stamped out in this locality by the close of the year. 



Li Florida, — At the same time of the discovery of the Maryland local, 

 ity, the scale was also received from L)e Funiak Springs, Florida. At the 

 request of the fruit-growers of that section of the State, the Department 

 of Agriculture sent Mr. H. G. Hubbard to make examination and 

 report. The insect was practically confined to the peach and plum, but 

 occurred also, in small numbers on Kieffer pears, and on pecan and per- 

 simmon. Many thousands of trees were infested, and' nearly every 

 orchard within a radius of five or six miles was more or less attacked. 

 Arrangement was made for the Experiment Station of Florida to under- 

 take the work of destroying the scale, by going over all the infested trees 

 in the district with five or six applications of the resin wash. If the 

 weather should prove favorable for the use of the wash, there was reason 

 to believe "that the nuisance will have been abated by the close of the 



