234 
JAMES RAW. 
OTHER PARASITES. 
To go over the other parasites which are common to man and 
animals would serve no good purpose. They rarely attain to the 
gravity of an epidemic, and will only demand sanitary interference 
in very exceptional circumstances; yet the Board of Health must 
be so constituted that it can effectually deal with any of these in 
such an emergency. For this, a veterinary sanitary committee 
will be always prepared, and will act mainly as an advisory body; 
but also, when necessary, in an executive capacity. Thus, an 
influx of measly pork should demand that it be traced to its 
source, and that its source, the tapeworm of man (T. solium), 
should be destroyed, while all pigs should be forbidden the infected 
ground for over a year. . An influx of measly veal should demand 
a similar correction, and thus dangers of a material increase of 
either of these parasites will be done away with. In fishing lo¬ 
calities where the Bothriocephalus latus or B. cordatus gains a 
wide diffusion, it may become necessary to keep all dogs under 
the closest surveillance and to periodically rid them of the para¬ 
site. It might further become needful to control the consumption 
of certain fish, or of fish-eating mammals likely to be devoured 
by dogs. The prevalence of Sarcoptis mutans (scabies) in chickens 
may become so great that it will entail a most inveterate itch in 
man, the true source of which is seldom discovered. Again, 
gregarina have lately been found in the lungs of chickens, and in 
the bowels of pigs, and it seems quite within the bounds of prob¬ 
ability that as they live on the hairs of man, so they may at times 
infest his internal organs. 
For the above reasons it is desirable that Congress should 
provide for the incorporation with the National Board of Health 
of one or more veterinarians, whose functions it would be to 
consult with the present members in all matters in which the 
health of the lower animals affects that of man; to advise as to 
the enactment and administration of State laws for the prevention 
and extinction of plagues and parasites common to man and 
animals; to conduct experimental researches into the source, 
propagation, and extinction of these ‘disorders and parasites of 
animals, and to act when necessary in an executive capacity in the 
