2 Development of the Limbs, Body-wall and Back in Man 



Table I 

 EMBRYOS STUDIED. 



*XII 



LXXVI 

 CXLVIII 



LXXX 



*II 



*CLXIII 



*CIX 

 CXLIV 

 CLXXV 

 CVI 



CLXVII 



-»XLIII 



*XXII 



Number of 

 Myotomes. 



3o. 



14 8c. 



3t. 



So. 5s. 



35 8c. 2- 3c. 

 or 12t. 



36 51. 



2o. 2s. 

 8c. 

 27 lot. 

 51. 



cannot be 

 counted with 

 certainty. 



3o. 5s. 

 8c. 5-6c. 

 38 12t. 

 51. 



8c. 5s. 

 34 12t. 4c. 

 51. 



Myotomes 



have 



disappeared. 



Myotomes opposite 



the 



arm leg- 



5c-lt 



5c-lt 



7-11 

 .5c- It 



5c-lt 



4e-lt 



11-ls 



11-ls 



21-2^5 or 26 

 11-ls 



11-ls 



11-1 or 2s 



No. of Myo- 

 tomes be- 

 tween tlie 

 arm and 

 leg regions 



11 



11 



11 



11 



The Roman numerals refer to embryos in the collection of human embryos belonging to 

 Prof. Mall, in the Anatomical Laboratory of the Johns Hopkins University. To Dr. Mall we 

 are gi eatly indebted for the use of these embryos. 



Reference to the embryos given in Table I will be found in the following articles by 

 Dr. Franklin P. Mall. No. II, A Human Embryo Twentj^-six Days Old, Jour, of Morph., Vol. 

 V; Nos. II, XII, XXII and XLIII, Development of the Human Coelom, Jour, of Morph., 

 Vol. XII; Nos. II, XII and XXII, Ueber die Bntwickelung des Menschlichen Darmes, 

 Arch, fiir Anat. und Phys., Special Bd., 1897; Nos. II, XLIII and LXXVI, Development 

 of the Internal Mammary and Deep Epigastric Arteries in Man, Johns Hopkins Hospital 

 Bulletin, 1898; Nos. II, XH, XXII, XLIII, LXXVI and CIX, Development of the Ventral 

 Abdominal Walls in Man, Jour, of Morph., Vol. XIV, 1898; Nos. II, XII, XXII. LXXX 

 CVI. CIX and CXLVIII, A Contribution to the Study of Pathology of Early Human 

 Embryos, Johns Hopkins Hospital Reports, Vol. IX, 1901. 



