FOODS ANIMAL PRODUCTION. 809 



Centhh, 4 (1S97), Xo. 1,}}}). 25, ;?t>).— The iiction of the chloriii and bromiii gases on the 

 egss of l'>omhij.r mori was studied. The eggs were ]>laced under liell Jars. Chlorin 

 gas allowed to act for 12 hours lessened the number of larvie; allowed to act for 2-i 

 hours it killed the eggs. Bromiu acted more quickly, an exposure of the; eggs to it for 

 half an hour killing all. Carbon bisulphid has the same efl'eet after 1.5 to 24 hours. 

 Sulidiurie acid vapor acts with the same result in 1 to 2 hours. lUuminatin,"- gas does 

 not give this result within 48 hours, and carbon dioxid does so only after 5 days. 

 Eggs placed in vacuo begin to suffer froui the second day. 



The brain of the bee : A preliminary contribution to the morphology of 

 the nervous system of the Arthropoda, F. C. Kenyon {Jour. Vomp. Neurology, 6 

 { 1S9G), pp. 133-110, ph. 9; abs. hi Science, '> {1S97), No. US, p. 358, and Jour. Roy. Micros. 

 Soc, 1S97, 1, p. 29). — The various tracts of fibers connecting the optic lobes, the auteu- 

 nal lobes, and the ventral nervous system with the mushrooiu bodies of the central 

 portion of the brain, as well as with other ])ortions, are described and figured. The 

 cells composing the mushroom bodies are thought to form the intellective centers of 

 the bee's brain. 



Larval gills of Odonata, (t. Gilson {Jour. Linn. Soc. London, 25 {1896), pp. 413- 

 41S,fi(js. 3 : ahs. in. Jour. Boy. Micros. Soc, 1S97, L, pp. 30,31). 



Thoracic glands in larvae of Trichoptera, G. Gil.>^on {Jour. Linn. Soc. I^ondon,25 

 {1896), pp. 407-412, fi(j8. 2; abs. in Jour. Roy. Micros. Soc, 1897, 1, p. 30). 



Gizzards of Odonata, F. Blis {ZooL Jahrb. Jbth. Sysf., 9 {1896), p)p. .596-624, figs. 

 14; abs. in Jour. Roy. Micros. Soc, 1897, I, p. 31). — The Calopterigina* are considered 

 as representing the primitive form and the Libellulin;e the highest. Sixteen longi- 

 tudinal toothed areas in the former are reduced in the latter to two pairs of teeth 

 bilaterally situated. 



Literature on defensive and repugnatorial glands of insects, A. S. Packard 

 {New York Enf. Soc Jour., 4 {1896), No. 1, pp. 26-32). 



Notes on the transformations of higher Hymenoptera, I, A. S. Packard {Neiv 

 York Ent. Soc. Jour., 4 {1896), No. 4, pp. 155-166). 



Metamorphoses of beetles, Xambeu {Ann. Soc. Linn. Lyon, 41 {1894), pp. 107-156 ; 

 42 {1895), pp. 53-100; abs. in Jour. Roy. Micros. Soc, 1897, I, p. 29).— In his fifth 

 memoir on the subject this author describes the metamorphoses of numerous families 

 of beetles with a view toward a better classification and to aiding in the formation 

 of better ideas of their economic importance. 



The gro'wth of the -wings of the Luna moth, J. A. Moffat {RjH. Ontario Ent. 

 Soc, 1895, pp. 36-38, figs. 2). 



The value of entomology, J. Fletcher {Rpt. Ontario Ent. Soc, 1895, pp. 16-21, 

 figs. 4). — A general survey of economic entomology, with mention of some of the com- 

 mon injurious pests, such as the fluted scale {Icerya purchasi), the clover midge, etc. 



The entomological laboratory of the state agricultural institute at Gem- 

 bloux, 1896, M. PosKix {Bui. Agr. {Ilruxelles), 12 {1896), No. 6, pp. 199-216, figs. 

 10). — A report on several of the common destructive insects of France, discussing 

 injuries, habits, etc., and pointing out the critical periods in the life history of the 

 insects, thus indicating the most favorable season for attempting to destroy them. 

 The plum lly {Apliis pruni), Liparis chrysorrhca, L. dispar, Bombyx neustria, Scohjtes 

 pruni, S. ruglosus, Bkrutora ritcllin(c, Calocoris bipunctatus, Mamestra brassica', Aleu- 

 rodcs chelidoni, and Ptilinus pectinicornis are treated. 



FOODS— ANIMAL PRODUCTION. 



On the behavior of coal-tar colors to-ward the process of diges- 

 tion, H. A. Weijkr {Jour. Amer. Chem. S<n\, JcS [ISOG]^ Xo. 12, pp. 

 109;2-1006). — P^xi^erimeuts were conducted to detenniue the probable 

 eflfects on digestion of coal-tar colors commonly used by confectioners. 



