HORSE MANAGEMENT, ETC. 408 
‘usion signifies the transfer of blood from one living iiiaal w 
mother, by means of a hollow tube inserted into the jugular veiw 
of each horse. His method was as follows: 
“T commenced a series of experiments, so as to discoier the 
simplest, safest, and most effectual method of conveying blood 
from one animal to another. I first tried the transfusion syringe, 
which has been used by medical practitioners for this purpose; 
but, whether from want of skill in its use, or from some dcfect in 
the instrument, (which had been recommended to me as one of the 
best,) or from some other cause, I can not tell, but certain it is I 
was in no case so successful with it as I was with a more simple 
apparatus. I fancied that the blood lost much of its vitality by 
being exposed to atmospheric action, and also by its being forced 
and compressed within the cylinder of the instrument. These 
impressions as to the cause of failure induced me to undertake 
several experimenis, with a view tu the construction of an instru- 
ment which would fulfill the requisite indications; namely, to allow 
the blood to pass freely from the vein of the healthy into that of 
the diseased subject, without coming in contact with the atmos- 
phere, and without alteration of its temperature. I at length 
adopted an exceedingly simple apparatus, which may be described 
in a few words. It consists of an India-rubber tube, some twa 
and a half feet long, and three-eighths of an inch in diameter; 
that is, about the caliber of the vein in the adult horse. To either 
end of this is fitted a silver tube, curved somewhat like a syphon, 
»» that tue end, which is slightly rounded at the point, might be 
easily passed into the vein, both tubes being exactly alike. A nar- 
row zinc or tin trough is required, to contain hot water, in which 
two-thirds of the tube should be immersed during the time that 
the blood is flowing. This completes the apparatus ; and, being 
prepared. and the horses ready, held by assistants, the jugular 
rein of the healthy horse from which the supply of is to be taken 
may be opened, and into it one of the silver tubes carefully passed, 
point upward, so a: to receive the current of blood as it flows back 
frora the head—the operator holding the other end, and, having 
areviously opened the corresponding vein in the patient, he shoula 
wait till the current is passing freely down the tube frim the 
healthy horse, and then bring it in contact with that which is now 
flowing slowly from the patient. He should pass the «nd of the 
hibe ca‘ efully int> the vein, point downward, by whic) ne une the 
