258 EXPERIMENT STATION RECORD. 



Spayed cows at the G-eneva Exhibition, C. Coenevin {Jonr. Agr. 

 Frat., GO (1800), II, Ko. 31, xrp. 1G4-1G7). — The cow referred to in the 

 followiug account received the first prize at the Geneva Exhibition. 

 The operation of spaying was performed January 17, 1895. The animal 

 was slaughtered May 12, 1896. The weiglit at tlie time of spaying was 

 735 kg. and at the time of slaughtering 92S kg., the average daily gain 

 being 0.4 kg. The yield of milk gradually diminished for about 4 

 months after the operation, and then remained nearly constant for the 

 remaining 12 months of the period under consideration, the average 

 daily yield being 11.7 liters. The cow consumed during the period 

 5,178 kg. of hay and roweu, 847 kg. of linseed cake, 662 kg. of maize, 

 400 kg. of wheat, 1,245 kg. of potatoes, 266 kg. of middlings, 858 kg. of 

 beets, 339 kg. of bran, and 62 kg. of barley. The weight of the carcass 

 and organs is given. The article contains a review of the subject by 

 E. Gouin. 



Effect of lead acetate on milk, Baum and Seliger {Arch. Thier- 

 heilk.; ((hs. in Zf.scltr. XaJir. VntersKch. unci Ilyy. WaarenJ:., 10 [1896), 

 JVo. 6', j>. 111). — A goat was fed for nearly 14 days 1 to 1.5 gm. of lead 

 acetate per day. During the first 3 days only traces of lead were 

 present in the milk, but subsequently 0.0009 to 0.0013 per cent of lead; 

 and this amount continued after the administration of lead ceased. A 

 young cat and a small dog fed with the milk sh6wed no symptoms of 

 illness. 



A cow was given 3 gm. of lead acetate dail}^ for 3 weeks, 4 gm. for 8 

 days, 5 gm. for 14 days, and up to 9 gm. for 25 days, receiving at length 

 15 gm., making in all 520 gm. during 80 days. There was no injury to 

 health from this. When the dose reached 10 to 12 gm. 0.0015 to 0.02 

 per cent of lead was found in the milk. 



Two young cats and dogs fed the milk for 10 weeks showed no ill 

 effects whatever. On slaughtering the cow, considerable percentages 

 of lead Avere found in various i)arts of the carcass. The author con- 

 cludes that the milk of cows treated with the lead acetate is harmless 

 for man or animals. 



The milk of tuberculous animals, means of rendering it harm- 

 less, and its use, Zurn {Molk. Ztg., 10 {1896), No. 12, i)p. 181-183).— 

 The author discusses the literature on the prevalence and dangers of 

 milk from tuberculous cows, the means which have been suggested for 

 rendering such milk harmless, the statutory measures adopted in some 

 countries against tuberculous animals, and the sale of their meat and 

 milk, etc. The wholesale testing of cows with tuberculin he believes 

 to be impracticable, chiefly on account of the expense. He argues 

 against compulsory heating or sterilizing of all milk before it is sold, 

 on the ground that the public generally demands raw milk, the opera- 

 tion can not be controlled so as to insure its being properly carried out 

 in all cases, and such milk is more difiScult to digest if not less digest- 

 ible, and concludes that this can not rightfully be required of the milk 

 dealers. He believes the only practicable way in which to do away 



