66 ENTOMOLOGICAL NEWS. [Feb., '07 



five miles of the Mississippi line. He stated that 64% of the 

 cotton producing area of Louisiana has now been reached as 

 against 31% at the end of 1905, that in the northern portion of 

 the State a forward movement of seventy miles had been re- 

 corded the present year. 



Mr. W. Dwight Pierce, of the Bureau of Entomology, closed 

 the Tuesday session with an exhaustive paper on the studies 

 made of parasitism of the boll weevil. Mr. Pierce, during the 

 past year, has made a study of the parasites of the Rhynco- 

 phora, especially of the boll weevil. He has found from the 

 examination of many thousand infested squares that already in 

 some localities in Texas they are an important factor in the con- 

 trol of the weevil. These he further found to have come from 

 the native weevils, the prevailing parasite varying with the 

 locality. 



The Cattle Tick. 



Wednesday, the cattle tick, the sole transmitter of Texas 

 fever in cattle, came up for discussion, the session opening 

 with Professor Summers in the chair in the absence of Pro- 

 fessor Sanderson. Dr. Cooper Curtice, of the Bureau of Ani- 

 mal Industry, first addressed the meeting, telling of the work 

 of eradication as now carried on by that bureau. 



Mr. Malcomb B. Dougherty, Assistant Entomologist of the 

 Louisiana Crop Pest Commission, followed Dr. Curtice, speak- 

 ing on the results of studies made in connection with the life 

 history at Baton Rouge. 



Mr. W. D. Hunter then addressed the meeting and discussed 

 the results of the cattle tick investigation and survey in Texas 

 as carried on by the Bureau of Entomology. He reviewed the 

 progress made in our knowledge of the biology of the tick, 

 referring to Professor H. A. Morgan, who, through his studies 

 of the life history, worked out the system of rotation which now 

 makes eradication practicable. He spoke of the climatic factors 

 which make eradication in the Gulf States quite a different 

 problem from that along the present quarantine line. 



Dr. Tait Butler, of North Carolina, who has already cleared 

 no less than ten counties in that State, next addressed the meet- 

 ing on the work that has been carried on under his supervision. 



