iG8 Mr. Brodie's Account , &c. 
natural growth of a child, had it not been found that the 
foetus, which I have described, though the heart was wanting, 
was fully equal in size to a foetus of the same age, which was 
possessed of that organ. 
It may be observed, that in all these cases, in which the 
heart was wanting, the liver was wanting also. It is probable, 
that the action of the vessels only, without the assistance of 
the heart, would have been insufficient to propel the blood 
through the circulation of the liver, which is so extensive in 
the natural foetus. 
