FEEDING OF THE PIG. 569 



the person who feeds them ; and it will be found that less 

 food in proportion to the weight of the animal will be required 

 as it becomes fatter. It is the duty of the dairymaid to fatten 

 the bacon pigs, and of the cattle-man to keep them clean and 

 littered/'* 



In the first place, let us find out how many ounces of flesh- 

 formers, how many of heat and fat givers, and how many of 

 mineral matter, are in the standard diet referred to in this 

 passage. 2 pecks of steamed potatoes make about 340 oz. of 

 potatoes ; 9 Ib. of barley-meal are 144 oz. of barley-meal. 



The flesh-formers in potatoes are 1.4 per cent ; the heat- 

 givers in potatoes are 22.7 per cent; the mineral matters in 

 potatoes are 1 per cent. 



The flesh-formers in barley-meal are 8 per cent ; the heat- 

 givers in the same are 78.8 per cent ; the mineral matters in 

 the same are 6.9 per cent. 



Whence in potatoes 



100 : 1.4 ', : 340 : 4.76 oz. flesh-formers. 

 100 : 22.7 : : 340 : 77.18 oz. heat-givers. 

 100 : 1.0 :: 340 : 3.40 oz. mineral matters. 



In barley-meal 



100 : 8 :: 144 : 11.52 oz. flesh-formers. 

 100 : 78.8 :: 144 : 115 oz. heat-givers. 

 100 : 6.9 : : 144 : 9.93 oz. mineral matters. 



The sum is 



Flesh-formers. Heat-givers. Mineral matters, 



oz. oz. oz. 



4.76 77.18 3.40 



; 11.52 115.00 9.93 



16.28 192.18 13.33 



The first thing to be remarked in this result is the high 

 ratio which the heat and fat givers bear to the flesh-formers 



* Stephens's ' Book of the Farm,' vol. i. p. 348. 



