324 Seventeenth Annual Report op the 



gle away and hide a valued sick animal, putting another healthy 

 one in its place, or who will drive a whole herd to a distant 

 secluded pasture, or ship them to market in direct defiance of law. 

 To meet such cases a complete record should be made and kept 

 of all susceptible animals within a wide area, around the actually 

 sick, registering them by every characteristic quality that can be 

 availed of for identification : sex, age, castration, breed, color, 

 color markings, form of body, head, horns, tail, udder, preg- 

 nancy, disease, distortion, disposition, etc., etc. A parti-colored 

 animal may be represented on a blank outline, by filling in the 

 spots, lines, belts, patches, etc., of black, white, brown, yellow, 

 red, roan, brindle, etc., in such a way that it cannot well be coun- 

 terfeited by another. Button shaped tags in the ears; marks with 

 a knife in the hair in given situations, of given directions, lengths 

 and depths ; clipping of the switch from the tail ; branding on horn 

 or hoof; marks or letters on a given part of the body with oil- 

 paint of a definite color, or some other indelible mark may be 

 used for purposes of identification. 



Any attempt to violate the orders, by the movement of animals, 

 should be met by speedy, condign, and severe punishment. Some 

 crimes end with the doing, and the evil is to be measured by the 

 immediate wrong done, but this is a crime against humanity 

 which, if successful in escaping discovery or prevention, tends to 

 go on increasing, until, in the infection of wide areas and count- 

 less herds, its evil results may be beyond computation. 



MEASURES FOR TRACING INFECTED AND EXPOSED ANIMALS 



No matter how promptly quarantine may have been imposed 

 nor how thoroughly it may have been carried out, there will 

 always be an imperative need for following animals and objects 

 that may have been moved from the contaminated area before 

 the restriction was imposed. All such movements from the 

 infected areas must be treated, and all animals that have come in 

 contact with the suspected animals, or things, or with the places 

 where they have been, or with their products, must be subjected 

 to the most exhaustive scrutiny, until the remotest danger of 

 infection has passed. Stock yards, like farms and fields, must 

 be investigated until the date and source of infection, or possible 



