No. 6. DEPARTMENT OF AGRICULTURE. 107 



.shall not in any case exceed three-fourths of the actual value of the 

 animal at the time of appraisement. After having been so appraised 

 the animal may be destroyed and its carcass disposed of in some 

 safe manner. 



(t)) Where a cow is appraised, as under the provisions of the 

 preceding paragraph, if it is killed in a slaughter house, and it is 

 found that its liesh may safely be used as food, the flesh is disposed 

 of upon as favorable terms as possible and this amount is paid by 

 the butcher to the former owner of the animal and is deducted from 

 the official appraisement. 



(10) Vaccination of cattle against tuberculosis is just coming into 

 use. As a result of the investigations that have been made by 

 the State Livestock Sanitary Board there is every reason to believe 

 that cattle may be so treated while young, that they may be ren- 

 dered immune to tuberculosis for a term of years, possibly for life. 

 This method of preventing tuberculosis is destined to be of great 

 value to the breeding herds. It may be that it will also be found 

 to be equally effective for mature cattle, and in this case it can be 

 applied for the protection of members of herds that are recruited 

 not by breeding but by purchase. 



These are in general the leading features that enter into the 

 crusade against tuberculosis of cattle in Pennsylvania. The plan 

 that is in use has been developed greatly during a period of ten 

 years, with reference to the special conditions existing in this State 

 and with reference to the needs of Pennsylvania live stock owners. 

 The work is proceeding in co-operation with herd owners, and 

 would proceed at a more rapid rate if more money were available 

 for its support. 



Tuberculosis was spreading in Pennsylvania, as in all other 

 eastern states, for many years. The disease cannot be eradicated 

 quickly excepting at enormous expense, and even if eradicated 

 completely it will still be necessary to continue a good deal of the 

 work that is now being carried on to keep the disease permanently 

 in hand. It is confidently believed that by means of the conserva- 

 tive, gradual method that is now in use, with such changes and de- 

 velopments as may be indicated from time to time as knowledge be 

 comes more complete, will lead in time to the repression of tuber- 

 culosis to such an extent that it will be of little public health or 

 economic importance. 



Reference is made in a later part of this report to the relation 

 of tuberculosis to the public health. The numerous investigations 

 that have been made in this field during the last three or four years 

 tend to emphasize the importance of a milk supply free from germs 

 of bovine tuberculosis. 



In September, an international veterinary congress was held in 

 Budapest. These congresses are held at intervals of five years and 

 they serve to bring together men from all parts of the world, many 

 of whom are official government delegates, and who represent the 

 most advanced thinkers and workers in the fields of the veterinary 

 sciences. Tuberculosis of cattle, and especially the immunization 

 of cattle against tuberculosis by vaccination, was one of the prin- 

 cipal subjects arranged for the last veterinary congress. In view 

 of the large amount of work in this field that has been done by the 

 Commonwealth of Pennsylvania, through the State Livestock Sani- 



