418 ANNUAL RECOED OF SCIENCE AND INDUSTRY. 



gratifying. It is found necessary to restore the alkaline Baits 

 removed in making the extract. In absence of these, the 

 animals lose their appetite, become sickly, and in some cases 

 show signs of rachitis and softening of the bones. When 

 meat-flour, with chloride and phosphate of potash added, was 

 mixed with potatoes and fed out to pigs, the animals fatten- 

 ed rapidly, and showed a normal and healthy growth. The 

 nutritive value of meat-flour fed in this way has been tested 

 by Lehmann, Diinkelberg, and Hotfmeister, at the experiment 

 stations in Bonn, Munich, and Dresden, and with similar re- 

 sults. In each, the increase in live weight, after subtracting 

 what was calculated to be due to the potatoes, was about 

 one pound to one pound of meat-flour. Hotfmeister and De- 

 lius have, from the results of these experiments, made some 

 calculations as to the nutritive value of animal, as compared 

 with vegetable albuminoids. They infer that the albumi- 

 noids of meat-flour have nearly double the value, as expressed 

 by the increase in live weight produced, of those of barley. 

 Hoflmeister adds : " Meat-flour has thus proved in all respects 

 excellent as a nitrogenous food to be added to other foods 

 rich in starch for feeding young swine. It should, however, 

 be fed in small quantities. By so doing, excellent results 

 can be obtained." 22 C, 1874, 137. 



