302 Studies of the Development ol the Human Skeleton 



Fig. 60. Section through the pubis, ischium, femur, fibula, calcaneus, cuboid 

 and the 4th metatarsal cartilages of Embryo LXXIV, length IG mm. Iff 

 diameters. 



Figs. 61-65. Sections through the knee-joints of several embryos. i-J 

 diam; 61, CCXXIX, length about 20 mm.; 62, LXXXVI, length 30 mm.; 63, 

 LXXV, length SO mm.; 64 and 65, CXLV, length 33 mm. 



Fig. 66. Longitudinal section through the knee-joint, tibia and foot-plate 

 of Embryo CLXXV, length 13 mm. 



Fig. 67. Section through the foot of Embryo CXLIV, length IJt mm. 



Fig. 68. Section through the foot of Embryo LVII, length 23 mm. 



The models from ivhich tlie illustrations in this article were drawn 

 have been reproduced hy Dr. B. E. Dahlgren at the American Museum 

 of Natural History, New Yorh, N. Y., and arrangements may he made 

 for securing copies hy applying to the Director of the Museum. 



