[ ] 
-.*.***'• , • • 
place the luxated Arm into ; this Cavity is quilted, 
and has Three Girts H , with Buckles, to tie the Arm 
fall and conveniently j they are made of ftrong 
Leather, It has on its inferior Surface a Groove 
with a Dove tail K,K , TAB. III. to lay hold of the 
Rod of the Lever, and to Bide in it without being 
leparated from it/unlefs it be in Biding beyond the 
Extremity B , of the Lever, where it pulls out like a 
Drawer, which is eafily done, if the Bracer has nothing 
to B:op it upon the Lever. The Extremity of the 
Bracer , which anfvvers to the thick End of the Lever, 
is rounded, in order to enter jointly with it under the 
Arm-pit ; the other gives hold to the Piece of Iron V), E, 
which I called above by the Name of the elaftic Tail of 
the Bracer. This latter confifts of Four Parts; the Fork 
F, which attaches itfelf to the inferior lateral Sur- 
faces of the Bracer ; the Spring f which is the Piece 
that follows next, the iongeft and Bendereft of all 5 the 
Teeth E } and the Handle E). 
The Ufe of the new Ambe. 
The Patient, being undreffed down to the Waift, is 
placed in the Arm-Chair, as in TAB. IV. Fig. 1. Next, 
the Lever, furnifhed with its Bracer, is raifed and kept in 
an horizontal Pofition, taking great Care, ^^Hippocrates 
recommends, to pufh this Bracer as far as may be 
under the Arm-pit to the End of the Bone of the 
Arm, and even beyond, if poflible, to the end that 
the Humerus , fupported by the Bracer in ail its 
Length, may be fecure againft all the Power of this 
Machine, and that its Violence may only aft upon 
thofe Mufcles which keep this Bone out of its Place. 
B elides 
