FIRST EDITION PUBLISHED OCTOBER, 1894. 
VOL. I. AMPHIOXUS AND THE ANCESTRY OF 
THE VERTEBRATES. 
By ARTHUR WILLEY, Sc.D., Balfour Student of the University of Cambridge. 
316 pages. 
“This important monograph will be welcomed by 
all students of zodlogy as a valuable accession to the 
literature of the theory of descent. More than this, 
the volume bears internal evidence throughout of 
painstaking care in bringing together, in exceedingly 
readable form, all the essential details of the structure 
and metamorphosis of Amphioxus as worked out by 
anatomists and embryologists since the time of Pallas, 
its discoverer. The interesting history of the changes 
it undergoes during metamorphosis, especially its sin- 
gular symmetry, is clearly described and ingenious 
explanations of the phenomena are suggested. Most 
important, perhaps, are the carefully suggested homol- 
ogies of the organs of Amphzoxus with those of the 
embryos of the Vertebrates above it in rank, especiall 
those of the Marsipobranchs and Selachians. ‘Though 
the comparisons with the organisms next below Am- 
phioxus, such as Asczdians, Balanoglossus, Cepha- 
lodiscus, Rhabdopleura, and the Echinoderms, 
will be-found no less interesting. In short, the book 
may be commended to students already somewhat 
familiar with zodlogical facts and principles, as an 
important one to read, They may thus be brought 
to appreciate to what an extent the theory of descent 
is indebted to the patient labors of the zodlogists of 
135 Illustrations. 
Price, $2.50 net. 
the last forty years for a secure foundation in observed 
facts, seen in their correlations, according to the com- 
parative method. ... The present work contains 
everything that should be known about Amphioxus, 
besides a great deal that is advantageous to know 
about the Tunicata, Balanoglossus, and some other 
types which come into structural relations with Am- 
phioxus.” 
— Professor Joun A. Ryper, 
in The American Naturalist, Philadelphia. 
“The observations on Amphioxus made before the 
second half of the present century, amongst which 
those of Johannes Miiller take a foremost place, showed 
that this remarkable animal bears certain resemblances 
to Vertebrates ; and since then its interest in this re- 
spect has gradually become more apparent.... A 
consecutive history of the more recent observations 
was, therefore, greatly needed by those whose oppor- 
tunities did not permit them to follow out the matter 
for themselves, and who will welcome a book written 
in an extremely lucid style by a naturalist who can 
speak with authority on the subject.” 
— Professor W. NEwTon Parker, 
in Mature, London. 
VOL. Ill. FISHES, LIVING AND FOSSIL. 
AN INTRODUCTORY STUDY. 
By BASHFORD DEAN, Ph.D., Adjunct Professor of Zoblogy, Columbia University. 
300 pages. 
344 Illustrations. 
Price, $2.50 net. 
This work has been prepared to meet the need of tne general student for a concise knowledge of the living 
and extinct Fishes. It covers the recent advances in the comparative anatomy, embryology, and palzontology 
of the five larger groups of Lampreys, Sharks, Chimzroids, Teleostomes, and Dipnoans— the aim being to 
furnish a well-marked ground plan of Ichthyology. The figures are mainly original and designed to aid in prac- 
tical work as well as to illustrate the contrasts in the development of the principal organs through the five groups, 
“The intense specialization which prevails in 
zodlogy at the present day can lead to no other result 
than this, that a well-educated zodlogist who becomes 
astudent of one group is in a few years quite left 
behind by the student of other groups. Books, 
therefore, like those of Mr. Dean are necessary for 
zoologists at large.” 
— The Atheneum, London. 
““Dr. Bashford Dean is known to zodlogists, first, 
as the author of exhaustive and critical articles in the 
publications of the United States Fish Commission, 
on the systems of oyster culture pursued in Europe, 
and, secondly, as an embryologist who has lately been 
doing good work on the development of various Ga- 
noid fishes and the comparison that may be instituted 
with Teleostei. His recent addition to the well-known 
‘Columbia University Biological Series,’ now being 
brought out by The Macmillan Company, under the 
editorship of Professor H. F. Osborn, is an interesting 
volume upon fishes, in which considerable prominence 
is given to the fossil forms, and the whole subject is 
presented to us from the point of view of the evolu- 
tionist. This is the characteristic feature of the book. 
From the very first page of the introduction to the 
last page in the volume, preceding the index, which 
is a table of the supposed descent of the groups of 
fishes, the book is full of the spirit and the language 
of evolution.” |©— Professor W. A. HERDMAN, 
in Nature, London. 
“The length to which this review has extended 
must be evidence of the importance of Dr. Dean's 
work. The suggestions here offered may be of use 
for another edition. That another may be called for, 
we may hope. For the work as it is, and for the care 
and thought bestowed on it, our thanks are due.” 
— THEODORE GILL, 
in Sczence, New York. 
‘*Louvrage de M. Bashford Dean nous parait fait 
avec soin; les illustrations sont excellentes et trés 
nombreuses, et il mérite le meilleur accueil de Ja part 
des zoologistes.” 
— Cu. BRONGNIART, 
in Le Revue Scientifique, Paris. 
“ For the first time in the history of Ichthyology, 
students are now provided with an elementary hand- 
book affording a general view of the whole subject. ... 
The last sixty pages of the volume are devoted to 
a list of derivations of proper names, a copious bibli- 
ography, and a series of illustrated tabular statements 
of the anatomical characters of the great groups of 
fishes. These sections bear signs of having been 
prepared most carefully and laboriously, and form an 
admirable appendix for purposes of reference. There 
will be much difference of opini peciali 
as to the value of some of the tables and the judgment 
pronounced by the author; but we have detected a 
very small proportion of errors for so bold an enter- 
prise, and students of the lower Vertebrata are much 
indebted to Dr. Dean for an invaluable compendium.” 
— ARTHUR SmiTH Woopwarp, 
in Natural Science, Londoa- 
