230 THE SEA-HORSE AND ITS YOUNG. 
course both pull, and, by a natural law, the force is ex- 
erted in exactly opposite directions, and the right angle 
is resolved into a straight line. It is but poor head-way 
they make, nor does it mend the matter much, that a 
third little fellow comes giddily on, and, switching his 
tail, takes a hitch at that precise point in space where the 
other two met. Now a triple force is exerted, and the 
effect is, with two straight lines to project three obtuse 
angles. And so the three toil on, obtusely laboring in 
statu quo. But a droller sight is that of yonder juvenile 
Lophobranch, who seems to be of somewhat belligerent 
proclivities,as he is leading by the nose a weaker member 
of his own species, having with his caudal extremity 
noosed him on the snout. These funny antics, though 
oft repeated, are of short duration, as the parties soon 
have to rest, from sheer fatigue. 
On the fifth of October the last of my little Hippos 
died. 
In the matter of fcetal sustenance, I find a remark- 
able marsupial analogy in the Hippocampus. The pouch 
of the Kangaroo and the Opossum contains teats, with 
which, by true lactation, the young are nourished until 
fully formed. Nor is the embryonal sack of the Sea- 
horse a mere receptacle, or nest, for the hatching of 
the eggs,—the fish does, in and by the pouch, supply 
nourishment to the growing young. The mass of fry on 
the day of its extrusion is certainly in bulk several times 
greater than se y the original egg-mass. We know that 
the bear duri lives upon the fat acquired the 
previous PERR y that ahstinence 
from food, the well-conditioned camel will subsist on the 
rani of its fattened hump. —— of the frog, 
which has just E M ES, SET E PEG” . does not 
E = d 
UUJ 
