ON THE CAUSES OF DISEASE. 28 
iu regard to the origin of diseases, it is known to the profession 
that the diseases of men and animals are often due to similar 
causes ; that the evils of domestication, which operate to develop 
disease in animals, are as notorious as the evils of civilization, 
which induces unnecessary diseases and premature death among 
members of the human family; therfore, our science does bear 
an intimate relation to social science, and it appears to us that no 
scientific mind can fail to appreciate the advantages to be derived 
from a more extended knowledge of the fundamental principles 
of veterinary science. 
Let the husbandmen and stock-raisers of this country put their 
shoulders to the wheel, in view of establishing veterinary schools 
and colleges throughout the length and breadth of our immense 
agricultural domain, and soon we can boast of having a class of 
veterinary surgeons, educated on American soil, conversant with 
the diseases incidental to the live stock of America. In that event, 
we can do our own doctoring, without foreign interference. 
We are not disposed to find fault, nor scold about the itinerant 
veterinary practice which prevails throughout the United States, 
for we are aware that all try to do the best they can for the relief 
of the inferior orders of creation. The fault is not with the prao- 
titioners, but with the people, who have failed to furnish the 
means of education. 
Resume.—Since writing the above, the “ Trichina” disease has 
made its appearance in Berlin, creating a terrible consternation 
among the consumers of pork. The disease in its symptoms some- 
what resembles cholera, but on making post-mortem examina- 
tions, there was soon discovered in the flesh of some persons an 
immense number of smal] microscopic parasites ; these were traced 
back to the flesh of the hog, where they were discovered in the 
form of chrysali imbedded in a little shell of lime; these, on being 
subjected to a slight degree of heat, speedily brought forth myriads 
of small parasites, of various forms and sizes, a dozen of which 
were frequently found in a piece of tissue as large as a pin’s head. 
The process of incubation was discovered to have been produced 
in the intestines of those who had eaten the pork, by the animal 
warmth of the stomach. Thus freed from their shells, the creat- 
ures make their way through the walls of the intestines in every 
direction, choosing the hard and fleshy tissues especially, and none 
of them have yet peen found in the blood. Most remarksble t 
