PLATE 3 
EXPLANATION OF FIGURES 
Figures 9 and 10 are from specimens in which complete amputation of the 
limb was made at the knee-joint (exarticulation). 
9 From a longitudinal section of a limb 41 days after operation. Ep.f.n., 
new femoral epiphysis; Fib.n., new fibula, proximal end; J.c.n., new joint-cavity 
forming. Magnified about 100 diameters. 
10 From a longitudinal section of a limb 48 days after operation. C.n., 
new cartilage; Os.n., new bone spreading through the cartilage; Os.c., new car- 
tilage cells transforming into bone-cells; B.f., old bone of the shaft (femur) ; 
M.c., portions of the marrow-cavity. Magnified about 420 diameters, 
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