LIVERPOOL VETERINARY MEDICAL ASSOCIATION. 
87 
the same state of the system (whatever that may be) that calls one 
tubercle into existence may generate an infinite number. When 
laudable pus is injected into the veins, even to the amount of 
four ounces, it has been found to cause no formation of internal ab- 
scesses, but that it is destroyed or disintegrated in its course through 
the circulation, burnt up in the lungs or expelled by the other 
excretory organs exactly in the same manner as other spent animal 
constituents are. It is found, however, that if there exists a debility 
of constitution in an animal suffering from abscess, or where there is 
formation of pus after an accident or a surgical operation, or when 
the external surroundings are unhealthy, as bad ventilation, over- 
crowding, or particularly bad drainage, a metamorphosis takes place 
in the pus, a process which may be compared to fermentation, by 
which a new element is formed and held in solution in the liquor 
puris ; which, by absorption into the system, sets up irritation in the 
tissues of the lungs, liver, or particular absorbent glands, which leads 
to the true formation of abscesses in these structures. 
Professor Tuson, in his lecture says, “ As it can be demonstrated 
that putrefactive processes are capable of charging our atmosphere 
with animal and vegetable beings which are probably, also with 
gaseous and vaporous bodies which are certainly detrimental to the 
health of man and the lower animals, it becomes a matter of 
literally vital importance to devise means by which the development 
of these noxious products of putrefaction may be prevented, and 
when developed they may be destroyed, or so altered as to render 
them incapable of doing harm.” For this purpose he recommends 
carbolic acid, chlorine gas, and wood charcoal, and explains how they 
can be used at 567 and following pages in the Veterina- 
rian for 1866. 
Mr. Haycock, in his works, says, “ An accurate knowledge of 
physiology can alone enable us to obtain an accurate knowledge of 
pathology, and until we fully understand the physiology of fibrin, a 
correct theory of inflammation cannot be deduced.” In another 
place he says, “The forces which impel the blood over and through 
the organism are of a vital and mechanical nature, the latter being 
dependent upon the entirety of the former for their power of active 
exertion during the life of the organism, so that the entire power of 
the organism to resist disease centres itself in the vital power, the 
mechanical forces we allude to arise from the impulse of the heart’s 
action upon the vital fluid, and the pressure of the walls of the 
bloodvessels upon the fluid within caused by the elasticity and con- 
tractility of these vessels ; but it must be clear to any one who 
reflects upon the question, that the first impulse received by the 
blood arises in the higher animals at least from the living force 
resident within the heart and larger bloodvessels ; and although vital 
force and physical force exist in intimate association, yet vital force, 
is the force to which our efforts in inflammation must in the main 
be directed to understand, and in our treatment to uphold.” In 
another place he says, “ By attention to the animal during the 
incipient stage of the disease, hundreds of valuable horses would be 
