Part 10

In this volume much more space has been devoted, comparatively speaking, to the Invertebrate Animals, than has usually been the case in works of this nature: upon the belief that all teachings of Zoology should, where possible, be accompanied by practical work, while the young student is much more likely to busy himself practically with shells, insects, corals, and the like, than with the larger and less attainable Vertebrate Animals.

Considerable space has been devoted to the discussion of the principles of Zoological classification, and the body of the work is prefaced by a synoptical view of the chief divisions of the animal kingdom.

⁂ A copy of any of the above works, for examination, will be sent by mail, post-paid, to any Teacher or School-Officer remitting one-half its price.

D. APPLETON & CO., PUBLISHERS, 549 & 551 BROADWAY, NEW YORK.

FOOTNOTES:

[1] It is unusual for muscles to have two tendons at the same end. Hence the name =biceps=, or “two-headed.”

[2] From _pulmo_, =lung=; the artery of the lung.

[3] From _hepar_, =liver=; the vein of the liver.

Typographical errors corrected by the etext transcriber:

would be unvailing=> would be unavailing {pg 34}

cordæ tendineæ=> chordæ tendineæ {pg 70}

the triscuspid valve between=> the tricuspid valve between {pg 72}

the body may may=> the body may {pg 103}