FEEDING OF ANIMALS. 299 



In an experiment made with a pig at Vienna by Meissl 

 and Strohmer, 1 it was estimated that 82.2 per cent of the 

 stored-up fat must have been derived from the carbohydrates 

 consumed. 



At Proskau, Weiske and B. Schulze 2 made experiments 

 with geese ; and they concluded that in one case 13 per cent, 

 and in the other 17.6 per cent of the stored-up fat must have 

 been derived from carbohydrates. 



At Peterhof, near Riga, Chaniewski 8 experimented with 

 geese ; and from the results concluded that in one case 71.1 

 per cent, in another 78.6 per cent, and in a third 86.7 per 

 cent of the stored-up fat must have been derived from carbo- 

 hydrates. 



Wolff also quoted recent experiments by A. von Planta and 

 Erlenmeyer, at Munich, with bees, 4 in which it was proved 

 that wax had been formed from sugar. 



Lastly, in 1880-81, Soxhlet made experiments with three Recent ex- 

 pigs, at the Agricultural Experiment Station at Munich. 5 ^P^^ 

 The animals were five to six months old ; they were fed for a 

 preliminary period of 321 days, with equal but limited 

 amounts of barley-meal. No. 1 was then killed and analysed ; 

 No. 2 was fed for 75 days, and No. 3 for 82 days, with 4.4 

 lb. steamed rice per head per day for most of the time, but 

 only three-fourths as much afterwards. Meat extract was 

 also given for 50 days. Finally, Nos. 2 and 3 were killed and 

 analysed. Calculation showed that the increase of No. 2 

 contained 14.19 per cent of nitrogenous substance, and 25.80 

 per cent of fat ; and that of No. 3, 7.25 per cent of nitrogen- 

 ous substance, and 57.23 per cent of fat. That is, the increase 

 of No. 3 contained only half as much nitrogenous substance, 

 and more than twice as much fat, as that of No. 2 ; and even 

 the higher proportion of fat (57.23) is low compared with that 

 which would be obtained with animals of good breed, and 

 rapidly fattened on appropriate food given ad libitum ; whilst 

 the composition of the increase of No. 2, both as to nitrogenous 

 substance and fat, can hardly be called that of fattening 

 increase at all. Still, calculation showed that, of the total 

 fat in the increase of No. 2, 79.38, and in that of No. 3, 81.84 

 per cent, must have been derived from the carbohydrates of 

 the food. 



Notwithstanding the extraordinary difference in the com- 

 position of the increase of Soxhlet's pigs No. 2 and No. 3, 



1 Ber. Acad. Wissens., Weill, 1883, Band 88, p. iii. 



2 and 3 E. Wolff, Die rationelle Fattening der landwirthschaftlichen Nutz- 

 tkiere, 5 te Aufl., 1888, p. 50. 



4 Bienenzeitung v. A. Schmidt, 1878, p. 181. 



6 Zeits. d. landw. Vereins in Bayern, 1881, pp. 423-436. 



