26r COMPOSITION OF FARM-YARD DUNG. 



EXCRETIONS OF THE COW. 



The COW was fed upon hay and raw potatoes. The urine and the 

 excrements together contained 86.4 of moisture. The weight of 

 the excretions, in twenty-four hours, was — moist, 80.5 lbs. ; dry, 

 10.9 lbs. 



Their composition by analysis was : 



Dry. Wet. 



Carbon 39-8 5-39 



Hydrogen 4-7 0.64 



Oxygen 35-5 4.81 



Azote 2.6 0.36 



Salts and earth 17-4 2.36 



Water " 86-44 



100.0 UK). 00 



EXCRETIONS OF THE PIG. 



The pigs, upon which the observations were made, were from six 

 to eight months old. They were fed upon steamed potatoes. The 

 urine and the excrements lost by drying 82 per cent, of moisture. 

 The average of the excretions yielded by one pig in twenty-four 

 hours was : moist, 9.1 lbs. ; dry, 1.6 lb. 



Composition : 



Dry. Moitt. 



Carbon 38.7 6-97 



Hydrogen 4-8 0-86 



Oxypen 325 5.85 



Aztite 3.4 061 



Salu and earth 20-6 87-1 



Water " 82-00 



100.0 100.00 



The litter that is generally employed is wheat-straw. This straw, 

 in the condition in which it is used, contains 26 per cent, of moist- 

 ure. 



Its composition is : 



Dritd. Undnea. 



Carbon 48.4 35-8 



Hydrogen 5-3 3-9 



Oxygen 38-9 28-8 



Azote 0-4 00-3 



Salts and earth 7-0 5-2 



Water -• " 26-0 



lUO-0 100-0 



At Bechelbronn each horse receives daily as litter 4. 1 lbs. ; each 

 cow 6.6 lbs- ; each pig 4.1 lbs. of straw- 



To the stables and the cow-houses together are given every 

 twenty-four hours 132.0 lbs. of straw for thirty horses ; 198.0 lbs. 

 for thirty horned cattle ; 06. lbs. for sixteen pigs; making 396.0 

 lbs. of straw, estimated when dry at 292.6 lbs. 



The composition of the materials which constitute the dung pro- 

 duced in one day are set forth in the following table : 



