Monograph on Dimorpbodon. 149 
and its potential energy, without which physiology as a e 
losophy can, I submit, have no existence. Thus the grade of 
radiation by the contact of the parent's body with the eggs, 
which are acquiring an kadetienidest heat of their own, that it 
should occasion no more astonishment than that we are warmer 
with a fire than without one, and certainly should not have 
