777 
J" slaughter of reacting animals under the supervision of federal in- 
I spectors. The loss in such cases falls directly on the farmer, since 
there is no provision for compensation. A copy of the agreement 
now in use is app6nded.“ Since such work was begun, and up to and 
including June 30, 1909, 2,010 animals have been subjected to primary 
tests. Of these, 204 have reacted. Of those not reacting to the first 
test, 1,237 have been retested and GO reacted. All cattle tested have 
been duly tagged, in accordance with the terms of the agreements 
’ that have been signed. 
The identification of tagged cattle is, of course, easy, and therefore 
t animals that have been tuberculin tested are thereafter easily recog- 
t Cause of 
Breed Age - ..Condemnation. -■ 
f Color - 
M arkings 
— Inspector* 
Fig. 66. — Bertillon identification applied to cattle. 
\ nized. There is, however, no provision of law that authorizes tag- 
I ging, and not infrequently difficulty is experienced in identifying 
i and following up cattle condemned b}^ the inspectors of dairy farms 
merely on the basis of physical examination. Such a cow, if found 
later on the dairy farm on which it was originally condemned, could, 
, in many cases, be identified without difficulty. But if she had been 
transferred to any other farm she was less likely to attract attention 
: and eA^en if she did identification Avas not ahvays easy. To minimize 
■ the difficulty of identification, the health department applied to dairy 
® See page 797. 
