EXPERIMENTS MADE ON SHEEP WITH THE INSECT, &C. 215 
“ Revolting and heart-sickening though such scenes may be, 
the evil is less than would result from the undisturbed decay of 
the dead : were that to take place, the air would hang heavy 
with pestilence, and the winds of Heaven, laden with noisome 
exhalations, would carry death and desolation far and near, 
rendering still more terrible the horrors and calamities of war.” 
EXPERIMENTS MADE ON SHEEP WITH THE INSECT, 
THE ICHOR, THE SCURF AND BLOOD OF 
SHEEP AFFECTED WITH THE SCAB. 
By Herhwig. 
[Continued from p. 114.] 
An Attempt by Experiment to produce the Disease by Trans- 
fusion of Blood . 
Although on many grounds it seems very unlikely that in- 
fection of the scab should be retained in the blood of the sheep, 
yet I was desirous to put this beyond possibility of doubt, and 
for this purpose I made the two following experiments by trans- 
fusion of the blood. 
Experiment No. 14. 
I undertook this, the first attempt, on the 10th of Feb., 1828, 
between the venous blood of a very scabby sheep and another 
sheep which had already been employed in Experiment No. 4, 
but at this time perfectly free from disease. To prevent the 
accidental communication of the disease by contact, each sheep 
was placed on a separate table, standing a little distance from 
each other ; and, moreover, between the two tables a door was 
placed so as to prevent the possibility of the animals touching 
each other. Each sheep had a different person to manage it, 
and different instruments were used for each, and the operation, 
so far as was required for each animal, was performed by dif- 
ferent persons. After the sound sheep had had six ounces of 
blood taken from it, for the purpose of preventing the over- 
loading of the vessels by transfusion, the jugular vein of this 
sheep was carefully laid bare, and into its upper end a pipe, 
formed of a quill, was passed into it towards the heart, and 
there fastened. In the same way, the jugular vein of the 
scabby sheep being laid bare, a pipe of the same description was 
introduced into it, but, instead of being passed towards the heart, 
