[ ] 
the Ambe is placed. This folid Union of all the 
Pieces of the Machine between themfelves, and with 
regard to the Patient, furnifh its Action with all the 
force and Certainty poflible. The Ambe of Hippo- 
crates can play but to a fmall Extent: It is feparate 
from the Chair in which the Patient fits, and he is 
left to the Care of the Afliftants; all difadvantageous 
Circumftances, which arc remedied by my Machine. 
In that of Hippocrates , the Body of the Patient has 
no other Support againft the Extenfion of the Lever 
than the very vertical Piece (fee TAB. II. Fig. 2. B ) 
on which the Lever refts; this Piece is narrow, has 
no Proportion, or, if one may fay fo, no Union with 
the Figure of the Body to which it is applied, and 
confequently muft change his Polition on that Piece 
upon the lead Effort the Patient makes. 
The Foot of my Lever has no Connexion with 
the Patient’s Body : There is between the Foot and 
his Body a particular Piece which I call the Bodice , 
reprefented in Fig. 1 . TAB. III. One willfee there, that 
it is made to fit itfelf to the Body ; and, in order to 
render that Application eafy, that Part which touches 
the Body, is quilted. This BodicedS fixed to the Arm 
of the Chair between T wo large Iron Cheeks, a } b , Fig. 
1. TAB. II. by Two ftrong Iron Pins, which run 
through them, and are flopped at their Extremities with 
Nuts skrewed on. The concave Part of this Piece, where 
the Body enters, is placed perpendicularly under the 
End of the Lever, however lb that the Lever be a 
little farther advanced towards the Patient, than the 
Bottom of the Bodice, to the end that the Lever may 
thruft itfelf the better in under the Arm-pit. As 
there are Cafes where the Head of the Lever ought 
to 
