12 
EDITORIAL. 
Dakota Agricultural Station, have published in Bulletin No. 94 
of the Agricultural College a pamphlet on “ Swamp Fever in 
Horses." 
This peculiar disease has already been the subject of many 
publications. Its history, etiology, pathogeny, symptomatology, 
etc., etc.,have been considered and treated in the writings of many 
•pathologists all over the world, and consequently it is well known. 
And yet it has given occasion to these three investigators of 
North Dakota for valuable experiments, information, discussions 
and new opinions, which are well presented in their Bulletin. 
There also are reproduced very good photographs which illus¬ 
trate the text, and also several plates, with the various records, 
taken from a number of animals, subjects of experiments. The 
table of the entire bibliography relating to that disease which is 
in the pamphlet shows the amount of inquiries made by the 
authors. 
The general conclusions are as follows: 
1. Swamp fever is a disease of infection, transmissible by 
subcutaneous and intravenous injection and by ingestion through 
the alimentary canal. 
2. The virus producing the disease is contained in the blood 
and urine of affected animals, but it is absent from the faeces. 
3. The virus has thus far been demonstrated only in an 
ultra-microscopic form. 
4. The virus is resisting to the severe freezing weather of 
our more northern climates. 
5. While not denying the possible transmission of the dis¬ 
ease in healthy animals by means of insects and parasites, ani¬ 
mals contract the disease naturally, by the ingestion of food and 
water, contaminated by the urine of an infected horse. 
6. The disease is essentially a septicaemia, anatomically 
marked and subserous and subendocardial hemorrhages in the 
more acute forms, by occasional involvement of the lymphnodes 
and spleen, by the degenerative changes in the parenchyma of 
heart, liver and kidneys, and probably also by certain alterations 
in the bone morrow of the long bones of the limbs. 
