Part 98

24593-4 Pa. $6.95

ON THE IMPROVEMENT OF THE UNDERSTANDING, Benedict Spinoza. Also contains Ethics, Correspondence, all in excellent R. Elwes translation. Basic works on entry to philosophy, pantheism, exchange of ideas with great contemporaries. 420pp. 5-3/8 × 8-1/2.

20250-X Pa. $5.95

Prices subject to change without notice.

Available at your book dealer or write for free catalog to Dept. GI, Dover Publications, Inc., 31 East 2nd St. Mineola, N. Y. 11501. Dover publishes more than 175 books each year on science, elementary and advanced mathematics, biology, music, art, literary history, social sciences and other areas.

LIFE HISTORIES OF NORTH

AMERICAN BIRDS

Arthur Cleveland Bent

LIFE HISTORIES OF NORTH AMERICAN BIRDS OF PREY. (20931-8, 20932-6) Two-volume set

LIFE HISTORIES OF NORTH AMERICAN BLACKBIRDS, ORIOLES, TANAGERS, AND THEIR ALLIES. (21093-6) $7.95

LIFE HISTORIES OF NORTH AMERICAN GALLINACEOUS BIRDS. (21028-6)

LIFE HISTORIES OF NORTH AMERICAN MARSH BIRDS. (21082-0)

LIFE HISTORIES OF NORTH AMERICAN NUTHATCHES, WRENS, THRASHERS, AND THEIR ALLIES. (21088-X) $7.00

LIFE HISTORIES OF NORTH AMERICAN SHORE BIRDS. (20933-4, 20934-2) Two-volume set

LIFE HISTORIES OF NORTH AMERICAN THRUSHES, KINGLETS, AND THEIR ALLIES. (21086-3) $7.95

LIFE HISTORIES OF NORTH AMERICAN WAGTAILS, SHRIKES, VIREOS, AND THEIR ALLIES. (21085-5)

LIFE HISTORIES OF NORTH AMERICAN WOODPECKERS. (21083-9)

LIFE HISTORIES OF NORTH AMERICAN WOOD WARBLERS. (21153-3, 21154-1) Two-volume set

Paperbound unless otherwise indicated. Prices subject to change without notice. Available at your book dealer or write for free catalogues to Dept. Nature, Dover Publications, Inc., 31 East 2nd Street, Mineola, N. Y. 11501. Please indicate field of interest. Each year Dover publishes over 200 books on fine art, music, crafts and needlework, antiques, languages, literature, children's books, chess, cookery, nature, anthropology, science, mathematics, and other areas.

Manufactured in the U.S.A.

Transcriber's Notes

Due in part to inclusion of quoted passages, inconsistencies in hyphenation and accents exist. Some rearrangement of content and reformatting was employed to standardize the species account headers.

Page Correction ==== =============================================== xi Dendroica towndsendi => Dendroica townsendi 14 Palo Dura Canyon => Palo Duro Canyon 50 inserted "by" between 15.5 and 12.5 91 13.2 and 17.0 were incorrectly typeset as bold 131 "watcht" as quoted from the original 149 PACULA PITIAYUMI NIGRILORA (Coues) => PARULA PITIAYUMI NIGRILORA (Coues) 189 "ae" ligatures set as in the original source