Hcemajlatics. 171 
of a long Iron Bar thro’ a Noofe of the Rope 
which was faftenened to the Ginglimus End 
pf the Bone. The Bar refted on a Fulcrum^ 
fo as to become a Lever : Then I hung on the 
other end of the Lever Weights fufficient to 
draw off the Head of the Bone at the joining 
where it grows in length, which is called Sym-- 
phyjish I found the Tenacity and Refiffance of 
this joining, to the Weight, to be equal to 
one hundred and nineteen Pounds when the 
Periojleum was taken off. 
30. Then I took the Inflep Bone of the 
other Leg of the fame Calf, and cut off only 
the Tendons, but left the Periojleum entire, 
and then fixed it in the fame manner as the 
former to the Lever ; whereby I found the 
Force requifite to fever the Head of the Bone 
from its Shank to be equal to five hundred and 
fifty Pounds. 
31. By the Experiment on thefirft of thefe 
Bones, the Tenacity of the vifeous Matter, 
at the joining of the Head to the Shank, was 
equal to one hundred and nineteen Pounds, 
which dedufted from five hundred and fifty 
Pounds in the fecond Experiment, there re- 
mains four hundred and thirty one Pounds, 
which gives the Strength of the Periojleum 
which 
