THERMOMETRY OF THE DOMESTICATED ANIMALS. 
337 
what Gerlach called a “ relapse,” that is, the temperature suddenly 
rises to the same degree it presented on the first day. We have 
few diseases which gives such remarkable curves as this. 
In pleuro-pneumonia contagiosa , Dele first noticed a change 
in the temperature in the stage of invasion, and declares it normal 
in the incubation period (latent aufangsperiod); but this is not 
endorsed by Smeale, for he says, that although the animals appear 
healthy, they show an increased temperature if they are under the 
influence of the contagium (i. e. if they are affected), but this is an 
assertion which we can scarcely receive as truth. According to 
Dele the temperature rises from 38.2° to 41.3°, and the more 
acute the disease is, the quicker this takes place, the temperature 
remaining high until the disease abates. Dele lays great stress 
on the value of the thermometer for the diagnosis of pleuro-pneu- 
monia contagiosa. He says there is no other thoracic disease which 
gives a temperature of more than 40°, and if we have it above 
this we may be sure we have a case of pleuro-pneumonia contagiosa 
to deal with. 
Glanders , in the chronic form, generally presents no increase of 
temperature; we sometimes even find a decrease; we generally 
observe great irregularities, in cases which are of a remitting 
type. In the acute form, however, Brusaseo found the tempera¬ 
ture gradually rose to 41.5° and 41.7°, being interrupted by slight 
deviations. 
A decrease of temperature is seen in cacliectical diseases, espe¬ 
cially dropsies, and not in those of a febrile character. In a 
case of peritonitis, accompanied with ascites and chronic indigestion 
of a cow, the temperature presented only 37.25. Ruhr and Sied- 
amgrotzky observed the temperature fall to 35°, sometime before 
death occurred. In passive enteritis of horses, a reduction of 1° 
to 1.5° is seen. 
Siedamgrotzky noticed the temperature gradually decrease 
from 38° to 34° and 35°, in a dog suffering from icterus, and once 
it even reached 32°, resulting in death. 
From excessively draining the system, as from vomition or 
purging, hemorrhages, and after debility caused by hunger or 
thirst, in short by all cases where the strength is much exhausted 
