THERMOMETRY OF THE DOMESTICATED ANIMALS. 
237 
another, thereby causing a tolerably even temperature in the body 
yet we find it is not the same in every part. In these organs in 
which much warmth is generated, we find the blood (venous) 
flowing from such organs to be much warmer than that (arterial) 
which supplies it, and in those organs in which warmth is ex¬ 
pended, the opposite is the case. The blood contained in the heart 
shows great variations of temperature, sometimes that of the 
right and sometimes that of the left being warmest. Haller, 
Krimer, Saissy, J. Davy, Masse, Becquerel and Breschet, found 
the arterial blood always warmer than the venous; Berger, Col- 
lard de Martigny, Hering, Cl. Bernard, observed the opposite to 
be the case. They held the blood of the left side of the heart to be 
about 0.2°c. colder than the right. Colin took comparative tem¬ 
peratures of both sides of the heart of horses, cattle, sheep and 
dogs, and in 93 cases, lie found 21 in which both sides were 
the same, 45 in which the blood of the right side and 27 when 
that of the left was warmest. 
Clinical Thermometry is that which furnishes us with the 
variations of the animal temperature during disease, and it ex¬ 
presses this in numbers, so that it does not depend upon the prac¬ 
tice and acuteness, &c. of the examiner. The thermometer then 
proves of immense advantage to the practical veterinarian, by 
aiding him to make a correct diagnosis and prognosis, which he 
could not obtain by any other means ; also under some circum¬ 
stances it points out the approach of disease, which would not have 
been discovered until much later by the ordinary symptoms of the 
disease. It also provides valuable hints in the treatment of dis¬ 
ease, which would have been delayed until the causes had pro¬ 
duced their physical phenomena. 
Schmelz remarks that the thermometer is just as valuable to 
judge the course, and fix the diagnosis and prognosis of a disease, 
as auscultation and percussion is in disease of the thorax ; and 
it provides a means of explanation, when other symptoms are 
liable to lead to error. Wunderlich compares a surgeon who 
forms an opinion of a case of fever, without the aid of the ther¬ 
mometer, to a blind man seeking his way in a strange locality. 
The warmth of the body resembles that of the blood, whose con- 
