No. 1.] ORIGIN OF HUMAN MONSTERS. 143 
were placed in 95 per cent alcohol one and one-half hours 
after the abortion. 
The above history makes it highly probable that the embryo 
is normal, as does also its reconstruction. However, at the 
tip of the tail there is a small vesicle which cannot be consid- 
ered normal. It is lined with a single layer of cylindrical 
cells, much like that of the central canal, is covered in part 
with round cells identical with those of the cord, and has on 
either side of it a spinal nerve, as shown in the diagram and 
the drawings. 
Fic. 6d.—Section through the vesicle, ’, nearer the tail with a ventral, 
motor, nerve root on either side. 
No. 10. 
Embryo, C. R., 20 mm. 
From Dr. W. S. Miller, Worcester, Mass. 
At first I believed the embryo to be normal, but after it had 
been cut into sections 20 microns thick, and the entire body 
reconstructed from them, it was found that the abdominal 
viscera were clumsy in shape and that the liver protruded into 
the umbilical cord. A comparison of the picture of the re- 
construction of the body of this embryo with those of both 
older and younger specimens will show that the body of the 
embryo is markedly distorted and that there is hernia of the 
liver. 
