140 



destroyed by (jutting down tlie limb affected; or, where the tree is small 

 and very rare and we can locate it, I have put in bisulphuret of 

 carbon and puttied up the hole, thus killing it in the burrow without 

 severing the branch. This remedy can be used in the trunks of small 

 trees, and is very effective. With an oil can the carbon can be intro- 

 duced without difficulty. 



Mr. Smith remarked that the habits of the larvse in wandering or 

 migrating into old burrows, mentioned by Mr. Southwick, is paralleled 

 in his exi)erience by certain Cossid larva;, with which he had observed 

 at various times an exactly similar habit. 



Mr. Howard inquired if anyone could give the present distribution 

 of the European leopard moth in the vicinity of New York. 



Mr. Smith said he was confident it had not yet reached New Bruns- 

 wick, but possibly had extended as far as Elizabeth, N. J. He said it 

 had been reported by Col. Nicolas Pike as occurring in Connecticut. 



In the absence of Prof. F. H. Snow, of Lawrence, Kans., the following 

 paper was read by Mr. Lowe : 



WORK IN ECONOMIC ENTOMOLOGY AT THE UNIVERSITY OF KAN- 

 SAS FOR THE SEASON OF 1894. 



By Francis H. Snow, Lawrence, Kaiis. 

 WORK WITH CHINCH-BUG INFECTION. 



The principal work in economic entomology conducted by this Uni- 

 versity during the present season has consisted of a continuation of 

 the laboratory and field exi)eriments for the destruction of chinch 

 bugs by Sporotrichum globuli/erum. At the date of the present writ- 

 ing upward of 0,000 individual farmers have been supplied with Spo- 

 rotrichum from our laboratory since AjDril 15, 1894. In addition to the 

 supply of individual farmers, thirty-six substations have been supplied 

 with the material for the starting of the work of infection in as many 

 different counties in the States of Kansas, Missouri, and Oklahoma 

 Territory. The material necessary for supplying the large number of 

 orders has been manufactured in thirty infection boxes, kept constantly 

 in operation since the opening of the season, about the middle of April. 

 Live, healthy bugs from the fields have been killed by Sporotrichum 

 in these infection boxes, and their mummified bodies haA^e been dis- 

 tributed to the farmers with instructions to each individual to establish 

 a separate infection box for himself similar to the boxes in use at tlie 

 University laboratory. An improvement adopted the present season in 

 the infection boxes has been the spreading over the bottom of each box 

 a layer of moist soil about an inch in depth. This seems to afford con- 

 ditions for the propagation of the Sporotrichum more in accordance with 



