OXYGEN AS A THERAPEUTIC AGENT. 
175 
The interesting experiences of Dr. Hal C. Simpson, in 
veterinary charge of a British transport for South Africa, are 
given elsewhere. This will be followed by an account of his 
journey to the Philippines. 
ORIGINAL ARTICLES. 
OXYGEN AS A THERAPEUTIC AGENT. 
By Dr. J. Campbell, Chicago, III. 
Read before the Chicago Veterinary Society, December, 1900. 
(Concluded from page 99.) 
If the solution of continuity produced either by a direct in¬ 
jury or from thrombosis, causing the death of the part cut off 
from the blood supply ; if it become infected by any of the many 
varieties of vegetable parasites, the process of destruction will 
be quite rapid ; but, supposing it does not become infected and 
yet passes over month to month and year after year and still 
does not heal, what rational conclusion can we arrive at? First, 
we know full well that almost any wound inflicted on a healthy 
subject, whether man or beast, under favorable surroundings, if 
kept clean, will readily heal by first intention, without any other 
assistance. I have frequently heard the statement made that 
an old sore of this kind was the result of blood disease and 
therefore must be treated constitutionally. As a rule the con¬ 
stitutional treatment has about the same result as the local. In 
coming to this conclusion the doctors were correct in part, but 
in part only. While it is true that the trouble is located in the 
blood, yet the rule is that it is not a general condition of the 
blood, but a local one (and amenable to local treatment) and 
due entirely to a deficiency of oxygen to the particular part 
where the ulcer or sore is located. 
While it may not be an easy matter to explain to the satis¬ 
faction of all why there should have been a deficient supply of 
oxygen to the part in the beginning to cause this condition, yet 
it is easily understood why there is a deficient supply after the 
