PLATE 2 
EXPLANATION OF FIGURES 
5 and 6 Longitudinal sections of a limb from which both tibia and fibula 
were completely removed. Time after operation, 60 days. T.c., tarsal cartilage 
showing normal marrow cavity and partly calcified lining; L.s.n., new skeletal 
element of the leg, in figure 5, partly ossified; Hp.f., epiphysis of the femur; 
J.c.n., new joint cavity; W.c., marrow cavity and B.f., bone of the femur. Magni- 
fied about 30 diameters. 
7 Longitudinal section of another specimen after same operation as above. 
Time one year. Tarsal cartilages blended proximally, 7.c.; new skeletal elements 
L.s.n. Other abbreviations as in figures 5 and 6. Magnified about 30 diameters. 
8 Longitudinal section of a limb from which the foot and the fibula were 
completely removed. Time after operation, one year. T.c.n., new tarsal car- 
tilages; Fib.n., new fibula (incomplete); 77b., tibia; Ep.f., femoral epiphysis. 
Magnified about 30 diameters. 
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