ANIMAL PRODUCTION. 



1105 



tigations which have a bearing upon this suljjeet, tiie material being critically 

 discussed. The lecithin in a decoction made from a mixture of cereals he regards as 

 of importance in inducing growth. 



Concerning- the glucose and proteid material of a ration, L. IJi clekt {Ann. 

 Ecoh' Xat. Aijr. }[i)„tj><ilifr, )i. xcr., .i [190.1), No. .)', pp. ^lJ-233). — Different amounts 

 of glucose were fed to ral)bits alone and in combination with alfalfa. The conclu- 

 sion is drawn that unless the quantity eaten was excessive, glucose was thoroughly 

 assimilated and did not exercise an effect upon the digestibility of protein. 



The influence of hydroxile ions on tryptic digestion, A. Kanitz {Zlarhr. 

 I'Jti/siol. Chem., S7 {1902), X(j. 1, jip. 75-Sr,). — Laboratory experiments are reported 

 and discussed. 



On the variations in the mineral, combined, and organized phosphorus in 

 animal tissues, A. L. Pekcival {Vompt. Rend. Acad. Set. I'urh, 135 {1902), No. 22, 

 pp. 1005-1007). — Analyses are reported showing the relative proportions of mineral, 

 comV)ined, and organized ph()S{>horus in a num])er of substances of animal origin. 

 Some of the results follow: 



Distrihiitiiti) iif pli()xjtli(jriiii ill 



ni/iiii' tiiniiKi 



I jirotJiiila. 



Muscles (beef)... 

 Heart (mutton) . 

 Intestine ( pig) .. 



Spleen (beef) 



Liver (beef) 



I'lUicreas (beef) . 

 Thymus (mutton 

 Brain (mutton) . 

 Kidney (mutton) 



Per cent. 

 72. 97 



77. 58 

 77.58 

 75.03 

 68. 99 

 (59. 21 

 76. 56 

 76. 75 

 79.11 



Phosphorus (estimated as P0O5). 



Total. Mineral. Combined. Organic 



Per cent. 



0. 507 



1.011 



.293 



.570 



.561 



.749 



1.223 



.638 



.458 



Per cent. 

 0.217 

 .380 

 .108 

 .176 

 . 264 

 .366 

 .454 

 .148 

 .232 



■ cent. 

 0.095 

 .305 

 .146 

 .304 

 .235 

 .369 

 .733 

 .370 

 .192 



' cent. 

 0. 193 

 .268 

 .038 

 .0.56 

 .062 

 .013 

 . 025 

 .115 

 .030 



The analytical methods are briefly described, and the results ol)tained are 

 discussed. 



Phosphates in the feeding of animals, A. Gouin and P. AxnorARD {Les 

 phoHphates dans V alimentalion du betail. Nantes: C. MeUhiel, 1903, pp. 37). — The 

 principal material containing phosphoric acid which was used in the authors' experi- 

 ments with calves was powdered green bone, which was fed with a basal ration of 

 skim milk and starch, or skim milk, oats, and coarse fodder. In some cases phos- 

 phoric acid was also tested. 



Judged by these experiments a calf a month old would tolerate 6.5 gm. of pow- 

 dered bone per 10 kg. body weight and digest the phosphoric acid contained quite 

 thoroughly. The phosphoric acid was well assimilated and the amount excreted in 

 the urine was not less than 85 per cent of the amount assimilated. The amount of 

 nitrogen and phosphoric acid in the food and excretory products is recorde<l in the 

 2 experiments reported, each of which extended over some 6 weeks. 



The authors believe that in the form of powdere<l bone phosphoric acid exercises 

 a very favorable effect on the nutrition of young ruminants, increasmg the amount 

 of nitrogen retained in the tissues and at the same time increasing the chemical 

 changes in the body which result in the formation of body heat. In connection 

 with the work the digestibility of oats was determuied. 



Cassava as a feed stuff, J. C. Brun.mch and W. Mawvei.l ( Queensland Agr. .Tour., 

 12 {1903), No. 1, pp. G5-G7).--h\ connection with a study of the feeding value of 

 cassava determinations are reported of the amount ol hydrocyanic acid in young and 

 old roots grown in C^ieensland. In view of the amount found the authors believe 

 that farmers should be warned not to use cas.sava, in its natural state, as a human 

 food or as a feeding stuff for animals. 



