170 EXPERIMENT STATION RECORD. 



Experiments to test the value of Bug" Death as compared with Paris green 

 and Bordeaux and Paris green on potatoes, K. Rouektso.v {('anmla Krpt. Farms 

 lijitx. r.iQ.', i>i>. J')0, ii.'>l). — Tlu' lar^H'Ht yield of i)otatoc,s was obtaiiu'd from plants 

 tn'atcd with Bug Di'ath; but the i-ost per acre for a trei'tnient of tliis insecticide was 

 §8.40 for 2 applications, while 2 sprayings with Paris green cost only $1.15 per acre. 



Chemistry of insecticides and fungicides, F. T. Siiutt ( Canada Expt. Fannie 

 lipU. 100^, pp. 131-154). — The author presents results of analyses of potassium cyanid, 

 linie-sulphur-salt wash, and Bug Death. One sample of a substance labeled potas- 

 sium cyanid was found to contain no potash; it proved to be sodium <-yanid, from 

 which apparently a larger quantity of hydrocyanic-acid gas could be obtained than 

 from potassium cyanid. ^n experiment was made in adding potash to the California 

 wash for the purpose of enhancing the value of this insecticide. The results indi- 

 cated that the wash may be more apt to clog in the nozzle after the addition of pot- 

 ash, if the mixture is allowed to cool before spraying. An analysis of Bug Death 

 indicated that this substance is chiefly an impure zinc oxid, and it is believed that 

 the material can not act as a fertilizer, as is claimed, but may exercise a slight fungi- 

 cidal action. 



Notes on spraying- and spray machinery, F. W. Faurot and J. T. Stinson 

 {Missouri Fruit Sia. Bid. 5, pp. 24, pis. 7). — The author discusses the subjects of insec- 

 ticides and fungicides with special reference to their defects and the conditions of 

 effectiveness. Measurements were made of the skin of a numl»er of common varieties 

 of apples for the purjiose of determining whether the thickness of the skin was in any 

 way connected with the degree of injury sometimes produced by Bordeaux mixture. 

 No connection was found between these 2 factors. Detailed notes were given on the 

 preparation of insecticides and fungicides and on the construction and management 

 of spraying machinery. The bulletin includes a spray calendar in the form of a folio. 



Pleasure and profit in honey production, D. E. Lyon {New Jersey State Bd 

 Ayr. Bpf. 190.?, jjp. 295-306 ]. — A popular account of the biology of the honeybee and 

 of practical methods for managing it with profit. 



An original honey extracter, Bloxdet {Rev. Internut. Apicidt., 25 {1903), No. 5, 

 pp. 92, 93, fig. 1). — A description of the advantages secured by the author in a simple 

 form of hofiey extracter. 



Bripe and unripe honey, F. T. Shutt {Canada Expt. Farms Rpis. 1902, pp. 163, 

 164). — Analyses of capped and uncapped honey, which are taken as being equivalent to 

 ripe and unripe honey, indicate that the honey from fully capped comb contains from 4 

 to 5 per cent less water than that from partly or entirely uncapped comb. The dif- 

 ferences in moisture content observed in different samples of honey kept in bottles 

 with glass stoppers and those covered with cheese cloth were exceedingly slight. 

 Honey from uncapped or partly ca])ped comb was found to possess poor keeping 

 qualities and fermented more readil>' than mature honey. 



Treatment of foul brood by means of eucalyptus, J. Comtat ( Iter. Internal. 

 Apiridt., 25 [1903), No. 5, j)p. 95, 96). — Experiments were made with essence of 

 eucalyptus as a remedy for foul brood. This substance was used in a number of ways, 

 but without marked success, except when added in the form of a slightly alcoholic 

 essence to the sirup used for feeding the bees in the spring. 



FOODS— NUTRITION. 



Dietary studies of groups, especially in public institutions, C. F. Lang- 

 worthy ( V. S. Dept. Agr., Office of Experiment Stations Rpt. 1902, pp. 3S7-416).— The 

 general problems which should be considered in providing a diet for large numbers 

 fed under uniform conditions, as in public institutions, are discussed, and experi- 

 mental data, which have to do with the feeding of armies, schools, hospitals, and 

 other institutions and groups, summarized. 



