April, '08] JOURNAL OF ECONOMIC ENTOMOLOGY 83 



suited in noticeable injury to the seed, showing that this substance as 

 sold is of very unequal quality and apparently of unlike composition. 



In reply to questions Mr. Forbes stated that the rows of corn in the 

 field were about a quarter of a mile long; that the seed corn had been 

 specially selected for the purpose and that, in the strips where the 

 lemon oil was used, at a cost of about ten cents per acre, the ants were 

 present between the rows, but very few aphids could be found. 



Mr. Bishopp stated that he had tried repellants against the cotton 

 boll weevil, including lemon, cinnamon, tar and clove oil. The odor 

 of the latter was most persistent, but where it was used the plants 

 showed greatest injurv^. 



Mr. Forbes remarked that when lemon oil was introduced into arti- 

 ficial ants' nests it seemed to set them crazy, as they acted in a very 

 confused and abnormal manner, even neglecting and deserting their 

 young. 



Mr. Taylor presented a paper : 



LIFE HISTORY NOTES AND CONTROL OF THE GREEN 

 PEACH APHIS, MYZUS PERSICAE 



By E. P. Taylor, Mountain Grove, Mo. 



The aim of this paper is to add a few new observations upon a very 

 old insect. It was in 1761, nearly a century and a half ago, that Sul- 

 zer first described this pest in Europe. It has been mentioned in most 

 works upon the Aphididte as well as in treatises upon general ento- 

 mology published in this country for many years, and has long since 

 been included in the lists of insects injurious to the peach in the 

 United States and Canada. Like many of our common insect enemies, 

 however, there have been and are yet many points concerning it unre- 

 corded. 



During the past two years or more this insect has become in parts 

 of the country a pest of more than passing importance. The peach 

 growers of Western Colorado have suffered loss from it ; from its heavy 

 infestation of the leaves of the trees in the spring, causing them to 

 curl and drop, prematurely to the ground, and from the withering and 

 subsequent dropping of the buds and forming peaches also infested 

 by the aphides at this time. It is probable that in many parts of the 

 country this plant louse has not yet appeared in such injurious num- 

 bers as to infest and destroy a portion of the crop itself as it has in 

 Western Colorado, but the insect is of interest since it is kno^vn to 



