GOVERNMENTAL INSPECTION 203 
each lot of virus the calves are now slaughtered 
under governmental supervision, and subjected 
to careful scrutiny. 
If a governmental inspector or supervisor, either 
through unworthy motives, and incentives, or be- 
cause of carelessness, shall be shown to be negli- 
gent in the matter, and permit practices in connec- 
tion with the business whereby accidental infec- 
tion to the biologic products enter, and in conse- 
quence harm results, such governmental officer or 
employee may be personally liable for the harm 
resulting; but the holding of such officer by no 
means reduces the responsibility of the manufac- 
turer. He may still be prosecuted criminally and 
civilly. It may be that the damages may be as- 
sessed against the manufacturer and the negli- 
gent official conjointly. 
159. Evidence of Infection. Where infection 
has occurred, the duty of ferreting out the evi- 
dence may, and probably would, devolve largely 
upon veterinarians. First, it should be detected in 
those used for the manufacture, either before or 
after slaughter. Secondly, should it not be de- 
tected at the start it must frequently be traced 
among the subjects upon which the product is 
used. This, in a large proportion of the cases, will 
be among the lower animals treated by veterinar- 
ians. In these cases, the work of the official veteri- 
narians would be greatly facilitated by certain pos- 
sible records made by private practitioners. 
Where, as in protection against hog cholera, a 
large amount of serum is used, the veterinarian 
should make such a record that he can trace the 
serum used on any particular lot. This is required 
