7O VETERINARY SURGICAL THERAPEUTICS. 
ventor made it known in 1873, under the name of ariificial ischemia. 
It consists in the use of am elastic band (plain or covered rubber), 
which is rolled round the leg or the mass to be removed, beginning 
at its free end. The spirals of the band, touching or partly covering 
each other, must exercise upon the tissues a strong pressure, which 
pushes back by degrees the blood towards the trunk. 
When the blood has been pushed out of the parts which are to be 
excised, a strong India-rubber cord is tied below the band. which, 
Fig. 34.—Preventive hemostasia, Rubber ties applied above the knee and the hock. 
pressing upon the arteries, closes them, and, therefore, acts as @ 
garrot. The band is then removed and the operation is performed 
below the cord without blood. In this process, two hemostatic 
means are used: the artificial ischeemia, obtained by the centripetal 
pushing of the blood, which is thus kept in for the organism ; and. 
the striction, which keeps the tissues bloodless by preventing the 
‘flowing of the arterial blood, and thus insures a bloodless operation. 
When the part which is to be submitted to Esmarchization is the 
seat of a wound, more or less extensive, this must be covered with 
a coat of wadding or a compress, which is placed under the band. 
When the operation is terminated, the blood-vessels are ligated and. 
the constricting rubber cord removed. Often then, if the stump has. 
not been cauterized, through the small arterioles and numerous 
divided capillaries, an abundant hemorrhage spreads over it, which 
is due to a vasomotor paralysis, the effect of the prolonged com- 
