68 The American Naturalist. [January, 
tree-frogs. The nest was about three inches long, by two or two and 
one-half inches wide, and nearly an inch in depth. In the inside and 
at the edges the frothy mass was quite white, and in consistency resem- 
bled the white of an egg after being thoroughly beaten. The lower 
face of the nest had taken on a yellowish tinge from long exposure. 
In this I found eggs, or semi-transparent jelly-like bodies as large as a 
small pea, which had already some power of motion, and on a few of 
which the tail was just beginning to take form. In another nest I 
found similar eggs just developing and also well-developed tadpoles. 
These last were about one-eighth of an inch in length and had tails 
one-half of an inch long. They seemed to move with difficulty 
through the mass. 
“I wonder whether this froth is at once home and food to them, but 
am unable to say. These nests are frequent everywhere except near 
the coast. I saw none nearer than ten miles from the beach. 
“I remember your saying something about finding tadpoles in trees 
in Japan, and I have the impression that you published something 
on the subject. If so this will be of interest to you.” 
Whether the creatures, the young of which Dr. Good found in this 
frothy mass were the tadpoles of Chiromantis guineénsis, to which a 
similar habit is ascribed by Bucholtz, of course I cannot say.—W. J. 
Hortan, Chancellor Western University of Pennsylvania. 
Horse “ Human Nature.’’—My son writes from a Wyoming 
ranch that a blind bay mare is ostentatiously protected by a black — 
mare, the two having been raised together. 
The blind horse would suffer greatly for feed, water, and from herd — 
interference if the black were not constantly on guard. The latter 
watches the bay and grazes in a circle about her, keeping other horses 2 
at a distance by kicks and bites if necessary, selecting good grazing = 
spots and watering places. 
The guardian is rewarded with occasional kicks and other human- 
like evidences of gratitude —S. V. CLEVENGER. 
