SMALLPOX AND COWPOX. 655 
Laboratory. The laboratory should consist of at least 
three rooms: (a) Stable; (6) operating-room; (c) labor- 
atory-room. It should be possible to make and keep 
all the rooms clean. The stable and operating-room 
should be flushed with a hose and hot water daily. 
Exereta should be removed immediately. The calves 
can be kept cleaner if they stand on a raised and per- 
forated platform, which is so short that the defecations 
cannot fall on it, and if they have no bedding. They 
must be fastened to keep them from licking the scari- 
fications. If they are fed with milk the dust that 
would be imported with other food is avoided. In the 
health department, when a calf is removed its stall and 
platform are scoured with a brush and sodium carbonate 
solution. The stable should be provided with a shovel, 
broom, hose, currycomb, mane brush, cord, halters, 
and with buckets, scrubbing brushes, and sponges. 
The operating-room should be well lighted and pro- 
vided with a table and stools. 
The only requisites for the table are that it should 
be heavy and firm; that it should have holes through 
the top so arranged that straps can be passed through 
them to hold the calf down, and a vertical strip on one 
side of the table to which the upper hind leg of the calf 
can be fastened. The calf can be thrown up on the 
table easily by two attendants. 
The laboratory should also be well lighted and fur- 
nished with tables, chairs, desk, case for instruments, 
and refrigerator. It should also have both a steam 
and a dry-air sterilizer, a set of scales weighing to 
grammes or centigrammes, and a blast lamp and bel- 
lows. In stock there should be one to two thousand 
bone slips for seed virus, and ten to fifteen thousand 
