1066 EXPERIMENT STATION RECORD. 



is to the affected person's eating this that the peculiar occurrence is 

 attributed. The maggot and adult are figured. In most cases a 

 description is given of the insects, enemies mentioned, and their habits, 

 and the proper remedies are noted. 



The new peach insect was found late in October, 1894, upon peach 

 trees, in the vicinity of Baton Rouge. 



A brief account of insecticides and their preparation is given. At 

 the end of the bulletin there is a list of parasites bred from the eggs, 

 larva, and pupa of various insects. 



The San Jose scale in Ohio, F. M. Webster (Ohio Sta. Bui. 81, 

 pp. 177-212, Jigs. 13). — The author discusses recent work with regard 

 to the insect; relates how it came to be introduced into Ohio; discusses 

 the nursery problem ; gives a report of the National Convention held 

 at Washington, D. 0., March 5, 1897, for the purpose of considering 

 the subject of quarantining the fungus and insect enemies of plants; 

 discusses the distribution of the scale by infested fruit and otherwise, 

 and the treatment of nursery stock, orchards, and grounds; and notes 

 the natural enemies of the scale, the necessity for drastic measures of 

 repression, the difficulty of detecting the scale, and the trees attacked. 



Twenty-three different places in the State, located in twenty coun- 

 ties, are now known to be infested with the scale. 



For preventing the spread of the insect through nursery stock, a 

 system of annual inspection by entomologists, and legislation to prevent 

 the transportation from one State to another of all nursery stock unless 

 it be accompanied by an official certificate, are advocated. The problem 

 of preventing the distribution by means of fruit, it is stated, may be 

 solved in the orchards where the fruit is grown. 



The treatment of nurseries and nursery stock may be by the hydro- 

 cyanic gas method, which may be used in the case of large trees should 

 it seem profitable to do so. In the case of large trees the author seems 

 to think it doubtful whether the scale can be exterminated where it has 

 become permanently established without sacrificing the tree. 



As to remedies the author thinks, all things considered, the best 

 results have been obtained with whale-oil soap, used at the rate of 2 

 lbs. to a gallon of water. But good results have been obtained by 

 cutting back trees and treating them with pure kerosene oil applied 

 with a brush or as a spray. The kerosene should be of a high grade 

 and should be applied in fair weather when it can evaporate quickly. 

 Several experiments with the remedy are reported. In some cases 

 injury was done and in one case the tree was probably killed. 



In the author's opinion, as ordinarily applied the remedy can not 

 be safely used on peach trees or on tender varieties of plums, but if 

 applied lightly it can be used with entire safety on plums, pears, and 

 apples,. especially when the trees are cut back. The most satisfactory 

 effect will be obtained if applied early in the fall or late in the spring, 

 or at both times. 



