THIRTEENTH ANNUAL YEAR BOOK— PART XI 579 



the percent that they saved will be used as a basis to figure the profit 

 they have obtained by vaccinating. 



Don't vaccinate hogs that are sick or show high temperature. 



Don't vaccinate with serum alone, then put sick ones with those vac- 

 cinated, unless you can confine them all in a space or pen, so that all 

 will receive the infection at nearly the same time. 



Don't pour more serum in your vessel than you will use, for pour- 

 ing remaining remnants back into the bottle is liable to contaminate the 

 serum and endanger its use. 



Don't pour virulent blood away if you have any left after the simul- 

 taneous method. Any remaining blood should be destroyed by fire. 



Don't use syringe, needles, or glass that has not been sterilized or 

 disinfected. 



Don't vaccinate infected herds, without marking those that show high 

 temperatures. You had better take ait least some temperatures in all 

 herds. 



Don't underestimate the weight of hogs in vaccinating. You are not 

 liable to give too much serum, but you may give too small a dose. 



Don't give your patrons too much encouragement when you are vac- 

 cinating infected herds. 



Don't use the simultaneous method in an already infected herd. 



INTERSTATE SHIPMENTS OF LIVE STOCK. 



The Animal Health Commission at its first meBting in -Inly, 1011, 

 formulated rules 18 and 19 governing the importation of live 

 stock into lovi^a. Most states have similar importation require- 

 ments and are using a uniform health certificate approved by the 

 United States Association of Live Stock Sanitary Boards. This 

 certificate is made in triplicate, the oripiiial aeconip'anie?? the ship- 

 ment and is attached to the way bill, the duplicate is forwarded 

 to the sanitary authorities of the state to which the shipment Is 

 billed, the copy is filed in the office of the sanitary authority of 

 the state in which shipment originates. This method thoroughly 

 carried out gives this office a record of all export and import ship- 

 ments with details as to the number and kind of animals contained 

 in each shipment. 



AYe have gathered some s'-ntistiis on this subjei-t that will 

 prove interesting. From January 1, 1912, to July 1, 1912, there 

 was reported at this office 1,755 export shipments. Almost all of 

 these are emigrants. Considering each shipment as representing 

 an emigrant family of 5, during this six months' period mentioned 

 we have sent out from Iowa 8,775 people. During the same period 



