520 MANUAL OF MODERN FAkRlERY 



At about a foot distant from the hind-quarters of 

 the cattle, there should be a hewn stone dung-groop 

 and urine-gutter, so that the latter may run off as soon 

 as it is discharged by the animal, and be conducted 

 into the urinarium in the yard, which should be 

 enclosed for the purpose. 



There should be several vents constructed for 

 allowing the breath of the cattle and ammoniacal gas 

 to escape, as the inhaling of the latter is very detri- 

 mental to the health of cattle ; and these also prevent 

 too great an accumulation of heated air. 



