66 EXPERIMENT STATION RECORD. 



weevil (Calandra granaria), the rice weevil (C. oryza), the pea weevil 

 (Bruchus pisorum), the bean weevil (B. obtecUis), the coffee bean weevil 

 (Arcccerus fasciculatus), the black carpet beetle (Attagenus piceus), 

 Trogoderma tarsale, and Anthrenus verbasci, the last a relative of the 

 buffalo moth, a green beetle (Cathartus advena), Lcemophlceus pusillus, 

 and the Angoumois grain moth (Sitotroga cerealleUa), as occasionally 

 found in vegetable stores. 



As regards remedies, care in purchasing, storing in tight receptacles 

 in cool dry rooms, heating affected stores in an oven to a temperature 

 of 125° to 150° F., and the use of bisulphid of carbon are recommended. 



The chinch bug and other destructive insects, F. M. Webster 

 (Ohio Sta. Bui. 77, pp. 33-52, figs. 11). — The author maps the distribution 

 of this insect in Ohio for the years 1894-'96, and endeavors to account 

 for the distributional phenomena shown. It is shown that during 1894 

 chinch bugs were distributed in a broad area extending nearly north 

 and south in the western central portion of the State, embracing 18 

 counties. In the following year the band had changed by the insect 

 disappearing from 5 counties and appearing in 12 new ones. Besides 

 these 25 infested counties, the insect appeared scattered over the State 

 in 21 other counties. The ravages of the insect were severe, and the 

 autumn being a dry one it seemed likely the entire fall brood of the bugs 

 must have gone through the winter in a healthy condition. 



The spring of 189G began with a moderate rainfall, except in the 

 extreme southern portion of the State, where but few bugs had been 

 reported during the previous year. About 750 packages of Sporo- 

 trichum globuliferum were distributed from the station, which evidently 

 produced an effect upon the distribution of the insect during 1896. 

 Sixteen counties were severely affected by the insect during this year. 

 The insect was found in some localities in 35 other counties scattered 

 over the State. The author is unable to account for the immunity 

 of Clarke and Montgomery counties from the attacks of the insect. 

 Neither map elevation nor meteorological data furnish any clew what- 

 ever to the problem, while the continued ravages of the pest in Ashta- 

 bula, Trumble, Mahoning, and Portage counties are even more difficult 

 of explanation. 



With reference to his experience with the fungus Sporotrichum glob- 

 uliferum as an insecticide, the author says: 



"While the practical value of this fungus has, in past years, probahly heen over- 

 estimated, it is to he regretted that there is at present a tendency to rush to the 

 opposite extreme. .Statements to the effect that it is of no value to the farmer, or 

 that artificial introduction is useless, as when the conditions are favorable it will 

 appear in a natural manner and do its work arc, to say the least, ill-advised and true 

 only under certain conditions. It is worthless to the farmer during a period of 

 drought or when the bugs are scattered, but it is practical and effective uuder con- 

 ditions the reverse of these. It will sometimes appear in the fields in a perfectly 

 natural manner, but this is uncertain, and we have here only one of many instances 

 where science can and does facilitate and accelerate the usually slow mechanism of 

 nature.'' 



