l6o THE PRINCIPLES OF MYODYNAMICS. 



had settled down one -half inch, had expanded 

 on all sides to a diameter of an inch and three- 

 fourths, and had about one-third partially broken 

 off : — Let me call attention to the fact that this 

 amount of pressure (2,200 pounds) is only 

 a little greater than the amount of pressure 

 (1,700 pounds) derived previously from a theo- 

 retical basis. 



(2.) The neck and the greater part of the 

 trochanteric remon of the same femur were cut 

 off, and subjected to pressure in the same 

 manner as the head : — The base of the piece of 

 bone was two and one-fourth inches by one 

 inch and a half: The summit of the neck was 

 about one inch in diameter. When the pressure 

 was about 600 pounds the summit of the neck 

 began to yield, and when the pressure was over 

 2,200 pounds, the summit of the neck had 

 settled down about three-eighths of an inch, 

 leaving the trochanteric region quite unchanged. 



(3.) The condyles of the same femur were cut 

 off transversely to the shaft of the bone : — The 

 cut surface of the piece was about three inches 

 by two inches : the depth of the internal condyle 



