422 Scientific Intelligence. 
each side of an imaginary plane which divides the body exactly into 
gitudinal plane, while in Articulates homologous elements of a different 
By a detailed comparison between Protozoa and Zodphyta, Protozoa 
and Mollusca, Protozoa and Articulata, Zodphyta and Articulata, and 
Bryozoa and Zodphyta, it is shown that there are no actual transitions 
5 0 
within the great groups, are deseribed. 
The third part of the book is devoted to a brief account of the devel- 
in Zoéphyta; Lymnza in Mollusca; Mystacides in Articulata; and 
w 
author, as in other parts of the work, lays personal claim to investiga 
tions made for and published in Agassiz’s Contributions to the Natural 
History of the United States. : 
However much other naturalists may differ from our author in many 
details, and in his generalizations and conclusions, the work cannot but be 
welcome to every one who, in seeking the truth, desires to see every side 
of these questions fully and fairly discussed. In no other way can We 
hope ever to attain the fundamental truths in nature. AcE v. 
he Urine in Health and Disease, being an exposition of the com- 
: ,@te. 2d ed., 416 pp. 12mo, 
engravings. Ldondon, 1863 (John Churchill & Sons)—A thorough and 
complete work on the urine, illustrated by numerous beautiful drawings 
