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heart of a city and fighting against unnatural conditions are sometimes 

 conspicuously attacked. On the grounds of the Massachusetts Agri- 

 cultural College, Oamperdown elms and Scotch elms have been found 

 particularly susceptible to the inroads of the pest. One Oamperdown 

 elm has already been destroyed and others have required attention 

 each year. 



In a number of instances there have been serious outbreaks of the 

 louse in nurseries in the State. One notable case, that at Concord, 

 has already been referred to, and others equally important might be 

 cited. 



While it very often occurs that the insect becomes established and 

 causes injury before its presence is detected, in the experience of the 

 writer it is not a difficult pest to subdue when it is discovered. Kero- 

 sene emulsion and whale-oil soap solution have both been used with 

 entirely satisfactory results. A medium-sized American elm infested 

 with the species was sprayed with kerosene emulsion, one part in nine 

 parts of water, early in August, 1896. The young lice had begun to 

 hatch about the middle of July and had continued to appear until near 

 the end of the month. With a view to killing all the insects with one 

 application of the insecticide, the tree was not sprayed until all had 

 appeared. Since the time of the application the tree has been exam- 

 ined repeatedly and only a single living specimen has been found. In 

 June of 1897 the writer's attention was called to a row of elms in 

 Amherst which were very thickly covered on the trunks and lower 

 limbs with the over-wintered females of this insect. Whale-oil soap 

 solution, 1 pound of the soap in 2 gallons of water, was applied, a large . 

 paint brush being used for the purpose. Only a few individuals sur- 

 vived the treatment, and the trees are in a good healthy condition this 

 season. 



Wishing to obtain duplicate specimens of the species for exchange, 

 the writer removed the bark for about a foot and a half from the trunk 

 of a badly infested tree, about an inch in diameter. Before pinning the 

 bark away it was kept in a glass jar for a time, to see if any parasites 

 would emerge. About a half dozen specimens were procured, a part of 

 which were sent for determination to Dr. Howard, who replied that 

 they belonged to a new species, which I might call Coccophagus gossy- 

 pariw of his manuscript. So far as the writer is aware, this is the first 

 positive knowledge we have of a parasite on this notorious Coccid. 



It is now nearly three years and a half since the San Jose scale, 

 Aspidiotus perniciosus, was first detected in Massachusetts, and that 

 it has gained a firm foothold in the State since that time is evidenced 

 by the large number of localities which are now known to be infested, 

 and by the frequency with which it is received at the experiment sta- 

 tion. To the 14 localities which have already been recorded in print, 

 Fairfield, Beverly, Dracut, Middleboro, and Katick may now be added. 

 It can hardly be doubted that the pest exists undetected in other local- 



