984 EXPERIMENT STATION RECORD. 



Proceeding's of the first g-eneral convention to consider the questions 

 involved in mosquito extermination {Hmukh/ti. }\'(di<)n<d Mosijailo JC.iieniiiudllon 

 ISorirhf, 1904, pp. 84, pis. 'i, Jifff. 9). — Thi' jiroi^ent volume coiituins an account of tlici 

 proceedings of a meeting of the National ]\Ios(j[uito Extemiinatiou .Society held at 

 the rooms of the Board of Trade, New York City, December 16, 1903. At this 

 meeting a considerable number of papers were presented dealing with various aspects 

 of the question of mosquito exterminatif)n. Among these papers we may mention 

 the following: Remarks on Extermination Work at IMorristown, N. J., by J. Chafiin; 

 Extermination and Exclusion of ]\Iosquitocs from our Public Institutions, by P. H. 

 P>ailliache; Government Anti-Mosquito Work, by J. C Perry; Transmission of 

 TNIalaria by Mosquitoes, by W. N. Berkeley; Anti-Mosquito Work in Havana, by 

 W. ('. (iorgas; Mosciuito Engineering, l>y 11. C. Weeks, etc. 



Beekeeping for small farmers, W. B. Cakk {Jour. Bd. A (jr. mid FisJierics ILon- 

 do».], 10 {1904), No. 4, PP- 468-475).— The author discusses the economic aspects of 

 beekeeping and presents notes on the moet important Ijee plants in various parts 

 of (ireat Britain. Practical directions are also given as a guide to the amateur in 

 selecting a location for an apiary and in caring for the bees. 



Studies on the races of bees, E. Ruffy {Bal. Hoc. Romande Apicult., 1 (IU04), 

 No. 1, pp. ^-6'). — A brief account of the comparative merits of races of bees. 



Bees in walls and attics, Delepine {Jour. Agr. Prat., n. ser., 7 {1904), No. 16, 

 p. 519). — Attention is called to the frequency with which swarm.s of bees become 

 established in the walls or unoccupied rooms of dwellings. Suggestions are made 

 regarding the means of getting rid of such swarms where they prove to be a nuisance 

 and also of utilizing the honey. 



Memoir on the future of sericulture, L. de l'Arbousset {Bid. Agr. Algcrie et 

 Tnnivi', 9 {1903), No. 23, pp. 521-530). — .Statistics are presented for the purpose of 

 indicating the gradual development and spread of the silk raising industry. The 

 author formulated a resolution which was adopted by the International Congress of 

 Agriculture at Rome to the effect that silk raising be recommended for further 

 extension throughout the southern jiortion of Europe, especially along the Mediter- 

 ranean Sea. 



The silk-growing- season of 1904, G. McCarthy {SMk, 2 {1904), No. 2, pp. 11). — 

 A l)iief account is given of the work thus far accomplished in the recent revival of 

 interest in silk growing in this country, together with notes on the prospects of the 

 silk industry for the season of 1904. 



The influence of low temperature during the incubation of silkw^orm eggs, 

 J. BoLLE {Ztschr. Landw. Versuchnw. Oesterr.,7 {1904), No. 3, pp. 173-179).— The 

 occasion of the investigations re^wrted in this paper was the severe frost which 

 occurred in parts of Austria in April, 1903. 



Experiments were carried out during which it was foun<l that temperature varia- 

 tions of 10° C. during the first part of the egg stage were without serious results when 

 of only short duration (48 hours or less). The same maybe said of temperature 

 changes of not more than 5° C. for periods of 24 hours during the last part of the 

 egg stage. Pronounced lowering of the temperature for 48 hours or more may have 

 the effect of delaying the emergence of the larvte, but produces no other consequence 

 of a serious nature. The continuation of low temperature for long periods, however, 

 may cause outbreaks of flacherie. 



During the feeding experiments carried on by the author it was found that no 

 serious results were produced by feeding once a day rather than the usual 4 or 5 

 times. When the caterpillars were fed only every other day they became very sus- 

 ceptible to flacherie. A study of the fungi in the bodies of dead silk moths disclosed 

 the fact that Botrytis bassiana was the common fungus present in moths affected with 

 muscardine. Artificial infection was brought about in about the same proportion 

 and with the same certainty whether the mycelium or spores of this fungus were 



