350 LABORATORY WORK 
The Stable.—The disinfection of the stable is difficult because of the roughness 
of the lumber with which the stable is made. A satisfactory method of disinfection 
is as follows: Remove all dirt from all surfaces in the stable. This must be done 
thoroughly or the disinfection will not be complete. Water must be used freely to 
moisten up the dry filth that has accumulated in various parts of the stable. The 
removal of the dirt is thus facilitated, and the cleansing must be thorough. After 
such cleaning, the whole stable should be washed with a solution of corrosive sub- 
limate, above given (1-1,000). This may be done by simply washing with a broom, 
or better, by spraying, provided a proper spraying apparatus beat hand. It must be 
remembered, however, that corrosive sublimate corrodes metals badly, and no metal 
spraying apparatus can be used. After the thorough wetting down of all surfaces of 
the stable by the disinfectant the stable must again be washed with water to remove 
the disinfectant. Instead of corrosive sublimate, a solution of chlorid of lime may 
be used in the same way in washing the walls and floors. A disinfection of a stable 
with formaldehyd or any other gaseous disinfectant is impossible, since the stables 
are never tight enough to prevent the gas from escaping rapidly. 
The Dairy.—The disinfection of the dairy must follow along essentially the same 
lines as the stable. Everything must first be cleaned as thoroughly as possible, 
and then all woodwork may be washed with corrosive sublimate, or better, with a 
3 to 5 per cent solution of carbolic acid. These solutions must mot be used for wash- 
ing the vessels which contain milk. For cleaning these vessels nothing but boiling 
hot water and steam are legitimate. After the disinfection of all parts, the whole 
must be washed with water. 
Other localities inhabited by animals—To disinfect the barn-vard in which cattle 
are allowed to roam is practically an impossibility, and the same thing is true of the 
pig pen. The amount of moist material accumulated in these localities is so great 
as to make disinfection impractical by any means yet devised. We must make the 
same statement in regard to pastures where infected cattle are allowed to roam. To 
disinfect a pasture is an impossibility; it must be left to the action of sunlight and 
rains, and these will, in the course of time, commonly produce the disinfection. 
