136 ESSENTIALS OF VETERINARY LAW 



state and foreign commerce. It has no authority 

 in purely internal affairs in the individual states. 

 The state official has full authority, provided the 

 state has enacted laws which grant him the 

 authority. 



The rules of the Bureau of Animal Industry of 

 the Department of Agriculture, organized by Act 

 of Congress, May 29, 1884,^^ known as the "Ani- 

 mal Industry Act," for the suppression of con- 

 tagious disease among domestic animals, have not, 

 apart from the action of a state, any binding force 

 upon the state." In the case of a contagious dis- 

 ease in the Chicago Stockyards the Chicago au- 

 thorities, and the Illinois authorities might enforce 

 a local quarantine. The national representative 

 could not do this, but in case he considered the 

 act necessary he might quarantine the whole state 

 of Illinois. In case that a Chicago inspector found 

 that infected dairy products were being shipped 

 from farms in Wisconsin to Chicago, he w^ould 

 have no legal authority to stop those products 

 until they reached the city limits. The state rep- 

 resentative could stop them at the state line. 

 Neither could exert authority within Wisconsin. 

 On the other hand, before the goods left the farm, 

 when they were marked for shipment to Chicago 

 destinations, the national official could step in 

 and seize the goods, for interstate commerce be- 

 gins as soon as the goods are prepared for ship- 

 ments^ 



16 C. 60, 23 St. 31, 18 Public Health, 238. 



17 Eshleman v. Union Stock- 

 yards Co., 222 Pa. 20, 70 Atl. 

 899. 



