FOODS ANIMAL PRODUCTION. 75 



Spraying for the destruction of insect and fungus growths, S. T. Maynard, 

 J. II. Putnam, and S. W. Fletcher (Massachusetts Hatch Sta. Bui. 44, pp. 45-48). — 

 A spraying calendar is given, with formulas for insecticides and fungicides, with 

 directions for their application. 



Important insecticides, C. L. Marlatt ( U. S. Dept. Agr., Farmers' Bui. 19, pp. 24, 

 rev. ed.). — The first edition of this bulletin was noted in E. S. R., 6, p. 315. In this 

 edition additional data on bisulphid of carbon have been given. The use of arsenicals 

 in connection with other fungicides, such as copper sulphate and eau celeste, or iron 

 chlorid solution, is cautioned against. Brief notes on poisoned bait are added. A 

 mixture of 1 lb. of white arsenic, 1 of sugar, and 6 of brau is recommended for 

 locusts. Relative to the advisability of the rotation of crops, it is noted that the 

 owner of a large farm in Indiana saved $10,000 by following corn with oats where 

 the corn root worm had been very injurious the year previous. 



Arsenite of soda for spraying, C. C. Abbe (Jmer. Agr. (middle ed.), 59 (1897), Xo. 

 :',p. 736). — Prefers this to Paris green, as being cheaper and easily procured or 

 made, and because the spraying mixture remains uniform in strength. For 800 gal. 

 of spraying mixture 2 lbs. of white arsenic and 8 lbs. of sal soda are boiled in 2 gal. 

 of water for about 15 minutes. This forms a stock solution. The spraying mixture 

 may bo be made by slacking 2 lbs. of lime in 40 gal. of water and adding 1 pt. of 

 the stock solution. 



Arsenate of lead on potatoes, F. C. MOUIVTON (Amer. Agr. (middle ed.), 59 (1897), 

 No. : ••', p. 686). — The author favors this substance in preference to Paris green, since 

 it is cheaper by about 10 cts. per pound; since it may be used in very strong solution 

 without injury to the foliage, viz, 1 lb. to 2 gal. of water; and since it remains on 

 the foliage throughout the season instead of being washed off by the first rain. The 

 author explains that the theoretical proportions of the acetate of lead and arsenate 

 of soda used in forming the arsenate of lead is 70.07 per cent of the former and 29.23 

 per cent of the latter; but he adds that a slight excess of acetate of lead is advisa- 

 ble as a protection against injury to the foliage. His method is to mix 11 oz. of 

 acetate of lead and 4 oz. of arsenate of soda and place in a paper bag. When ready 

 to spray, several bags are emptied into the water, adding 2 qt. of glucose or molasses 

 to each 150 gal. of water. 



Remedy against the onion maggot, J. B. Smith (Amer. Agr. (middle ed.), 59 

 (1897), Xo. 15, p. 455). — Kainit was applied broadcast at the rate of 500 to 000 lbs. 

 per acre after turning the earth away from the onion rows, to be turned back after 

 the application, in the rows at the time of setting, or as a top-dressing. In the first 

 experiment all diseased onions were first removed and destroyed. 



Destruction of the beet sylph, Maeechal (UEngrais, 12 (1897), Xo. 24, p. 565). 



FOODS— ANIMAL PRODUCTION. 



Old vs. new-process oil meal, J. Wilson and C. F. Curtiss 

 (Iowa Sta. Bui. 33, pp. 591-593). — A feeding test which lasted 4 months 

 was made with 9 cattle divided into 3 lots. Lots 1 and 2 each con- 

 sisted of 2 cows and a yearling steer, and lot 3 of a cow, a bull, and a 

 yearling steer. Lots 1 and 2 were as near alike as possible. The 

 cows in lots 1 and 2 were bred before the trial began to ascertain 

 whether new-process meal would in any way interfere with the health 

 of the cows during the period of gestation. During the first 2 months 

 of the test lots 1 and 3 were fed old-process meal, and during the last 

 2 mouths new process meal. With lot 2 the conditions were reversed. 



