ANATOMY OF A 17.8 MM. HUMAN EMBRYO 



F. W. THYNG 



PLATE 4 



Reconstruction to show the right atrium and ventricle of the heart; the venous system of 

 the right side; and the left umbilical vein of a 17.8 human embryo (H. E. C. 8.39). X 11.2 

 diams. 



109 



