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. 

 Excreta 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 



