February, '10] CURRENT notes 109 



that a concentrated wash about 27 degrees Beaume (1.23 specific gravity) 

 does not freeze above 15 degrees Fahrenheit. Results of a series of trials 

 to determine the relative amounts of lime and sulfur show that the waste is 

 smallest when 100 pounds of lime and 195 pounds of sulfur are used to 100 

 gallons of water. This, it may be noted, is very nearly the same as the 

 Cordley formula. The field results of several investigators with this wash 

 against San Jose scale and apple scab are summarized. A table has been 

 prepared showing the approximate strengths to be employed for various 

 sprays. Experiments in the use of poisons with a lime-sulfur wash leads the 

 author to advise the employment of arsenite of lime. This bulletin gives 

 valuable data upon an important subject. 



Current Notes 



Conducted by the Associate Editor 



Dr. L. O. Howard has approved plans for a special investigation of the 

 ticks concerned in the transmission of the so-called spotted fever of human 

 beings in the Rocky Mountain region. The cooperation of Prof. R. A. 

 Cooley, who has done notable work on the ticks of Montana, has been ob- 

 tained. He will become a collaborator of the "bureau on March 1, and super- 

 vise the work done in Montana. An agent of the bureau will be stationed in 

 the Bitter Root Valley, where a particularly virulent strain of the disease 

 occurs, for studies of the tick throughout the season. The biological survey 

 of the department of agriculture has agreed to place a man in the valley to 

 obtain data on the exact limitations in the distribution of the various ani- 

 mals that serve as hosts for the ticks. This investigation is connected with 

 the other tick work of the Bureau of Entomology, under the direction of Mr. 

 W. D. Hunter. 



Plans have been perfected for a cooperative investigation by the Bureau of 

 Entomology and Clemson College of South Carolina of the cotton red spider 

 (Tetrantjchiis gloveri) in that state. A joint agent will be placed in the 

 field on February 1. 



Mr. D. L. Van Dine, engaged in investigations of the sugar cane and rice 

 insects in the Bureau of Entomclogj% is about to locate at Audubon Park, 

 New Orleans. Plans have been perfected for cooperation with the Sugar 

 Experiment Station of the state of Louisiana. Mr. Van Dine will locate in 

 quarters furnished by the station. His laboratory will be opened about Feb- 

 ruary 1. Mr. T. C. Barber, who is engaged in the study of the relation be- 

 tween the Argentine ant and the sugar cane Pseudococcus, under the direc- 

 tion of Mr. Wilmon Newell, will be located with Mr. Van Dine. 



Since the Division of Insects has been moved into the new National 

 Museum building, the additional space has given enough room so that the 

 entire systematic collections amassed by the Forest Insect Investigations have 

 been moved into that building. 



J. F. Zimmer, who has been working on citrus fruit insects in the Bureau 

 of Entomology, has been transferred to the branch of deciduous fruit insect 

 investigations. 



Reginald Wooldridge has been appointed as an agent and expert for work 



