50 REVIEWS. 
URAL History or Anmats. By Prof. Sanborn ite T and Mrs. 
SA A. Tenney. New York, 1866. Scribner & Co. 
This little work, as the title arias presents ina Saronic way the 
atural History of Animals. e illustrations are mainly the same as 
those contained in a previous abe by Prof. Tenney on Natural His- 
tory. The figures are mostly drawn from American sources, and the 
book will be found quite useful to those who wish to obtain a know- 
ledge of our native animals. As the work is intended for beginners, 
the style is plain and free from technicalities. Yet we regret the ab- 
sence of the technical names, for we believe that on all occasions, the 
` scientific name of an animal should be coupled with its common one, 
so that gradually the popular mind may become accustomed to the use 
th gee 
and more particularly, a clear appreciation of the value of classifica- 
on. 
ON THE YOUNG STAGES OF A FEW ANNELIDS. By Alexander Agassiz. 
From the Annals of the Lyceum of Natural moy: New York. 
Vol. viii., p. 303. June, 1866, 6 plates, pp. 4 
In this interesting article we find accounts of the in lives of some 
of our common marine worms. Though necessarily fragmentary, from 
the difficulty of obtaining these creatures in all their stages of growth, 
yet such facts as we here learn about the early stages of the Nareda- 
like worm, are of the highest interest to the philosophic naturalist. 
worm is a long, narrow, smooth-bodied Nemertean, with two 
cks on the head. The absence of the locomotive bristles and 
tentacles, found in the higher worms, such as Nereis, show its near re- 
lationship to oe intestinal worms. But the metamorphosis is remark- 
le, Th ung is provided with two tentacles, which in the course 
of pispieat ee off, thus affording us an instance of a sll 
grade course of development in the class of worms, like the Ba = 
among Crustacea, the young of which have feet and antenne, as in 
little water fleas (Entomostraca), while in advanced life these ‘take 
mostly drop off, and the animal would easily be mistaken for a shell fish. 
e quote some directions for observing and collecting these young 
worms, so tg as objects for the microscope : 
Johannes Mi t 
gauze net; ag e coat followed with eminent success by man 
Se fhe surface of the sea ain search of diminut tive animals, scarcely to ye tte 8 
with the f 1 estigators 
at 
Seseo man Baur a introduced fishing with the gauze net by e et to any br 
the hand net. M 2nd Mol ee Eih 
have even attempted, with mesam reniei — = y of Kiel, 
bottom any animals there abounding. mna e P Pump up from the vicinity of the 
+ + 
D ariy Stas 
aD 
di Tse eli 
