December, '14] CURRENT NOTES 487 



A new edition of the Naturalists' Direcitory has just been publislied by S. E. 

 Cassino, Salem, Mass. This directory is invaluable to naturalists since it is the 

 means of bringing together students and collectors in all parts of the .world through 

 correspondence. The directory contains an alphabetical list of English-speaking 

 professional and amateur naturalists in all parts of the world, also a list of scientific 

 societies and periodicals. The price of the Directory is $2.50 in cloth binding and 

 $2.00 in paper binding. Sent postpaid. As only a limited edition has been printed, 

 it is advisable for any one wishing a copy to order at once. 



Carnegie Scholar.s in Entomology Visit the UiSfiTED States 



Mr. C. W. Mason has returned to England and will accept a post in one of the 

 African colonies. 



Mr. M. E. MacGregor has returned to England and will take a lectureship at 

 Oxford in medical zoology. 



Mr. H. A. Ritchie is still in this country and is now makiftg a trip through the 

 Southern States. 



Mr. G. H. Corbett and Mr. E. Hargreaves reached Washington late in August 

 and are at present visiting the stations at Clarksville, Tenn., Batesburg, S. C., and 

 Orlando, Fla. 



Mr. E. R. Speyer, of Cambridge, is at present in Washington and will study 

 forest insects, starting in October for a visit to the far western forest insect stations. 

 He will return to England in December and proceed to Ceylon for the purpose of 

 studying the tea Scolytid. 



Still another Carnegie scholar, Mr. H. G. Champion, is expected to arrive in Octo- 

 ber to study forest insects. He is a son of the well-known entomologist, Mr. C. G 

 Champion. 



Susceptibility of FoUenia rudis to Nicotine. — The "cluster fly" has been very 

 numerous and quite annoying to the members of the staff in different laboratories 

 of this Station during the past fall. It occurred to the writer to trj^ a nicotine prep- 

 aration (nicotinfe 90 per cent, water 10 per cent), which was applied by means of 

 a small wad of cotton to the sills at the base of the window panes, the hquid being 

 used in sufficient quantities to slightly moisten the wood. The effect on the flies 

 was most marked, causing the death of a large percentage of the insects within a 

 short period of time. This treatment has been frequently tested with similar 

 results, and because of these experiences other laboratories in the institution have 

 been influenced to use this method of destroying the pests. Black Leaf 40 proved 

 to be equally effective as the foregoing preparation, although it is somewhat less 

 rapid in its effects upon the creatures. With dark wood there was very little evi- 

 dence of discoloration, but with windows coated with a light paint it would be desira- 

 ble to place a narrow strip of cardboard on the sill before applying a nicotine prep- 

 aration. P- J- Parrott. 



Mailed November 30, 1914. 



