854 EXPERIMENT STATION RECORD. [Vol. 41 



which consists of data on the sexes. The second, by the author and L. T. 

 Porter, rehxtes to spermatogenesis of males reared from unfertilized eggs ; the 

 third considers maturation and fertilization; and the fourth deals with the 

 asexual larvae. 



The species used in the study v.-as Paracopklosomopsis fioridanus of Ash- 

 mead, which oviposits in the egg of the cabbage looper. Its egg develops in 

 the body of the cabbage looper caterpillar, and by the time the caterpillar 

 reaches the stage for pupation the larval parasites have consumed its entire 

 contents and pupate within the skin of the host, which later hardens to form 

 the mummified carcass. This form is said to be similar to the European 

 chalcidid Litoiiiastix truncatcllus studied by Silvestri (E. S. R., 19, p. 57). 



The author's studies indicate clearly that a fertilized female is capable of 

 laying eggs from which individuals of both sexes develop, and that the un- 

 fertilized egg produces males only. 



References to the literature are included in the first two papers. 



Reference is made by the author to his previous observations on the develop- 

 ment of Copidosomo geJechlae} 



POOBS— HUMAN NUTRITION. 



Nutrition in war and lessons to be learned from it, F. Rho {Ann. Ig. 

 [Rome}, 29 (1919), No. 5, pp. 269-276) .—The author discusses the effect of a 

 restricted diet in different countries during the war, emphasizing the fact that 

 the decided reduction in calories and protein has not been productive of as 

 much trouble as was to be expected. In conclusion he recommends that an 

 effort be made to adopt a standard ration somewhere between the 2.000 calories 

 and 70 gm. of protein of the war rations and the 3,-500 calories and high protein 

 of prewar times. 



The practicability of feeding a scientifically balanced ration in Army 

 camps, R. .T. Anderson (Amer. .Jour. Plii/siol, J,9 (1919), No. /,, pp. 523-530). — 

 The author discusses certain important problems connected with the proper 

 feeding of an army, and suggests the advisability of having an officer trained 

 in the science of nutrition in every camp or division or of maintaining a 

 separate department of nutrition or alimentation in connection with the War 

 Department, with subordinate officers in the camps. The practicability is also 

 suggested, of having a uniform menu for a whole camp instead of separate 

 menus for the different messes. 



Average food consumption in the training camps of the United States 

 Army, .T. R. IMurlin and F. M. Hildebrandt (Amer. Jour. Physiol., 49 (1919), 

 No. 4, pp. 531-556, figs. 11). — Statistical data on the food consumption in the 

 training camps of the United States Army during the recent war, based on 

 nutritional surveys made in 67 different camps including a total of 427 indi- 

 vidual mosses, arc iiresented in tlie form of tables and graphs, and discussed 

 under the headings of total consumption, food consumption by organizations, the 

 effect of season on food consumption, the effect of length of time in camp, 

 food consumption in the canteen, food consumption in the Army compared witli 

 other occupations, distribution of nutrients in the Army diet, percentage of 

 calories supplied by chief components of the ration, and variety. An earlier 

 report on the same subject has been previously noted from another source 

 (E. S. R., 40, p. G8.) 



Variations in strength and in the consumption of food by recruits and 

 seasoned troops, P. E. Howe, C. C. Mason, and S. C. Dinsmore {Amer. Jour. 



iBiol. Bui. Mar. Biol. Lab. Woods Hole, 29 (1915). pp. 333-373. 



