702 

 Mississippi Station, Bulletin No. 17, December, 1891 (pp. 16). 



Insects injurious to stored grain, H. E. Weed, M. S. (figs. S)._ 

 Descriptive notes on the angonmois grain moth {Gelechia cereaUella), 

 black weevil [CahuuJra onjz(v), red grain beetle (Silranus casnia'), corn 

 sap beetle [CarpophUxiH paUipenni-s), SUvanus surin/ii}Hii.si.\, Tribttlium 

 fernigineum, and Calandra (jranariu. Tliere are also suggestions for 

 the repression of these insects, with special references to the use of 

 bisulphide of carbon. The figures accompanying the text are original, 

 with the exception of two, m hich are after liiley. 



Mississippi Station, Bulletin No. 18, January, 1892 (pp. 4). 



Cotton, test of varieties, E. K. Lloyd, M. S. — Tabulated notes 

 on 46 varieties grown at the station in ISIM. The varieties giving the 

 most ])rofitable yiehls of lint and seed were Eureka, Texas iStorm I'roof, 

 xUlen, Bailey, and Drake Cluster. 



Mississippi Station, Bulletin No. 19. January. 1892 (^pp. 12). 



SOITIIEKN T(»MAT<» lU.KJHT. ]i. 1). H Al.S I KD. I >. S( '. — Owing to the 

 prevalence of an undetermined disease of tomatoes in Mississijtpi, the 

 author, who is connected with the New Jer.sey College Staticm, was 

 em])loyedby the Mississippi Station to makea special study of thedisease. 

 For this ])uri»ose lie made observations in the field «luring 1S!>1 and has 

 since continued the work in his kUioratory in New .lersey. This bulletin 

 includes a preliminary account oftlie.se investigations, which are to be 

 continued the coming sea.s<m. The di.sea.se known as S<mthern tomato 

 blight causes tlie wiltingof the i)lant. whi«'h afterwards loses its green 

 color and dies. The lilight <l(»es not seem to be contine4lt«» any partic- 

 ular kind of soil, situation, or e.\]»osure. Micro.scopic examinations of 

 the diseased i>ortions of the plant revealed the ])resence of large num- 

 bers of bacteria, and further tests seem to show that the.se bacteria are 

 the cause of the trouble. A ba<'terial di.sea.se of potatoes, melon.s, 

 and other cucurbits has been studied, and inoculation experiments are 

 reported which indi<-ate that the bacteria found on these jilantsandon 

 the tomato are of the same kind. The author makes the Ibllowing prac- 

 tical suggestions with reference to the repression of this di.sease: 



A soil may becMniie so contaiiiinated witli bacteria from any one of the three crops 

 as to make it unlit for either of the other two. Repetition of the same crop is of conrso 

 not cU'siralile. 



The potato from the nature of its "seed"' is best adapted to the dissemination of 

 the blight, as it can be carried tinobserved in the potatoes used in phmtinp. 



As tlie Hordeaux mixture has proved effective for the bacterial disease of the potato, 

 spraying with this compound is recommended for all three crops when fear (»f 

 blight is entertaincfl. 



Care should be taken to burn the diseased i)lants when found, and also all litter in 

 the field at harvest time. 



