Geology and Natural History. 155 
h 
The next day I found two embryos in one of my glass jars; they 
occasionally moved in jerks, and then rested for a long while 
Atlantic, and of these the most common are Exocetus, Naucrates, 
Scopelus, Chironectes, Syngnathus, Monacanthus, Tetraodon and 
Diodon. Was there a way to come nearer to a correct solution of 
my doubts ? 
the very first comparison I made secured the desired result. The 
pigment cells of a young Chironectes pictus proved identical with 
those of our little embryos. 
It thus stands as a well peer Re fact that the com- 
e@ 
cradle, rocking upon the deep ocean, is carried along as an undying 
arbor, affording at the same time protection and afterward food for 
its living frei it. ; 
This marvelous story acquires additional interest if we now take 
into consideration what are the characteristic peculiarities of the 
importa 
not probably in building their nest. 
