339 



is the subject of Professor Atkinson's Bulletin No. 9 of the Alabama 

 Agricultural Experiment Station, recently noticed in these pages. 



A series of field experiments is proposed by Professor Com stock the 

 present year to determine the best method of combating it. Work 

 has also been prosecuted on wire-worms ; a hop-yard has been estab- 

 lished for the study of the Hop Aphis ; and much attention has been 

 given to a species of Aleurodes (A. vaporiorum) which infests in its 

 early stage the under side of the leaves of various plants and has not 

 before been mentioned as occurring in this country, although it is a 

 well-known European pest. 



Ohio Station Investigations.— Article XIX in Bulletin 7, volume II 

 (Second Series, Xo. 14) of the Ohio Agricultural Experiment Station, 

 entitled "Xotes on Experiments with Eemedies for certain Diseases," 

 by Clarence M. Weed, is interesting as treating of the matter of com- 

 bining insecticides and fungicides, or applying at the same time a remedy 

 to destroy fungus diseases as well as insects. Mr. Weed states that the 

 practicable application of such a combination originated in the division of 

 entomology and botany of the Ohio Station. The case is well set forth 

 in the article, by an extract from a recent paper by Mr. Weed in Agri- 

 cultural Science (date not given). It is proposed that by combining the 

 copper sulphate solution for blight and the Paris green or London purple 

 solution for the Colorado Potato-beetle, a solution can be made that at the 

 same application will kill both, and lessen the expenditure of time and 

 labor. In the same way a vineyard may be protected from black rot 

 and various leaf-eating beetles by combining such applications as are 

 used for each. A note on the efficacy of " eau celeste" for mildew and 

 the Rose Beetle was published in Insect Life for July, 1888 (Yol. I, p. 

 32), and we may add that combined applications for insects and fungi 

 have long been made in France. 



A resume of the principal injurious insects noticed by the Ohio 

 Agricultural Experiment Station during the year 1889 is given in the 

 Eighth Annual Report, published in Bulletin 8, Volume II, second 

 series, of the Station. Two insects that gained prominence during the 

 year are the Grain Plant-louse and the White Grub. An original 

 figure of the wingless form of the former is given, and its great abun- 

 dance in June and sudden decrease from the attacks of Lady-birds and 

 Hymeuopterous parasites are noticed. 



A new remedy is claimed for the Clover-seed Midge (Cecidomyia 

 leg umini cola), which consists in mowing the field about the middle of 

 May when the heads are just forming. The new crop of blossoms fol- 

 lowing matures between the two broods of the midge, thereby escaping. 

 This is but a variation of a remedy originally proposed by Professor 

 Comstock in the Annual Report of this Department for 1879, page 195, 

 and reproposed by Mr. James Fletcher in 1887. 



