564 General Notes. [July, 
a dozen others, as it came up rather indistinctly through the trees, 
Iwould say: “There, ‘Shep,’ that is our bell; go and get the 
cows!” As soon as he seemed to feel sure of the sound he would 
start off upon a run, and it would be but a few minutes until I 
would hear the bell coming towards home. From many trials I 
satisfied myself that he could distinguish the sound of our bell as 
far as I could myself. _He could doubtless have been trained to 
o many such tasks, but he had had little or no training of any 
kind, and this instance that I have stated seemed to have been un- 
derstood by him as a matter of course, and had not come through 
any special effort or discipline—Chas, Aldrich, Webster City, Lowa, 
ISS. 
and histology of these forms. He first discusses the glands in 
the legs of certain forms first pointed out by Prof. Smith? Next 
the urinary glands, which are found at the posterior portion of the 
alimentary tract are investigated. Following this comes an 
account of the structure of the gills and the rectum of Orchestia. 
e next point discussed is the fact that certain portions of he: 
testes of Orchestia produces eggs, and our author says: “WE 
da, 
and shows only the remarkable exception shat a definite portion Ks 
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EFFECTS OF DIFFERENT COLORED LIGHT ON THE GROWTH OF A 
MALS.—Various persons have experimented upon the effects of ie 
ferent colored light upon the growth of animals, and have univer 
sally found that animals develop at different rates under besten 
fluence of the different colors. M. Yung in his recent investiga- 
tions on the eggs of frogs, trout and Lymnza,? found that Oe 
developed in the following order, the violet accelerating and the 
red retarding: 
Violet. 
; Blue. 
These two colors acted in nearly ¢ Yellow. 
the same manner. { White. 
Green. 
—F. seo 
ZoorocicaL Nores.—The Proceedings of the United ree 
National Museum, just issued, contain a check-list of dupli 3 
* Otmar Nebeski, Beitrige zur Kenntniss der Amphi;oden der Adria. Arbeiten 
dem Zool. Inst. Wien, 1, pp. I-52. pls. 4, 1880. oe 
* Tube building Amphipoda. 4m. Your. Sci., 111, VII, p- 601, 1874 
‘ : . Scé., TH, oS ‘ oe 
* De l’influence des lumiéres ante sur le dével ¢ des animaus—Mitthelr 
ung Zool. Station Neapel, 11, p. 233, 1880, x 
Sof 
