INDEX

[14]. This family should stand as Histiopteridæ, the name Pentaceros, Pentacerotidæ, being used earlier for starfishes.

FERNS

A MANUAL FOR THE NORTHEASTERN STATES

WITH ANALYTICAL KEYS BASED ON THE

STALKS AND ON THE FRUCTIFICATION

With over two hundred illustrations from original drawings and photographs

By CAMPBELL E. WATERS

302 pages, square 8vo. Boxed, $3.00 net; by mail, $3.34

This book is thoroughly authoritative, and is written in popular style. It covers all the ferns in the region embraced either in Britton's or in Gray's Manuals.

"This book is likely to prove the leading popular work on ferns. No finer examples of fern photography have ever been produced. Dr. Waters brings to his work fifteen years of experience in field and herbarium study, and the book may be expected to prove of permanent scientific value, as well as to satisfy a want which existing treatises have but imperfectly filled."—Plant World.

"For all who study or wish to study our native ferns Dr. Waters has prepared a book which is sure to prove both helpful and inspiring. Especially charming and significant are the views showing typical habits and habitats."—The American Naturalist.

"There could hardly be a better book for those interested in the subject."—Boston Literary World.

OUR NATIVE FERNS

AND THEIR ALLIES

WITH SYNOPTICAL DESCRIPTION OF THE AMERICAN PTERIDOPHYTA

NORTH OF MEXICO

By LUCIEN M. UNDERWOOD

Professor in Columbia University

Revised. xii + 156 pages, 12mo$1.00

"The elementary part is clear and well calculated to introduce beginners to the study of the plants treated of. The excellent key makes the analysis of ferns comparatively easy. The writer cordially commends the book. It should be in the hands of all who are especially interested in the vascular cryptogams of the United States."—Bulletin of the Torrey Botanical Club, N. Y.

Henry Holt and Company

29 West 23d Street,New York

GEOLOGY

Vol I. "Geologic Processes and Their Results"

By Prof. THOMAS C. CHAMBERLIN

AND

Prof. ROLLIN D. SALISBURY

Heads of the Departments of Geology and Geography, University of Chicago; Members of the United

States Geological Survey; Editors of the Journal of Geology

With numerous illustrations, including 24 colored maps and

3 tables. 654 pages, 8vo, $4.00 net

Vol. II. "Earth History." In preparation

Chas. D. Walcott, Director of U. S. Geological Survey: "I am impressed with the admirable plan of the work and with the thorough manner in which geological principles and processes and their results have been presented. The text is written in an entertaining style and is supplemented by admirable illustrations, so that the student cannot fail to obtain a clear idea of nature and the work of geological agencies, of the present status of the science, and of the spirit which actuates the working geologist."

T. A. Jaggar, Jr., Harvard University: "An excellent statement of modern American geology, with abundant new illustrative material based upon the most recent work of government and other surveys."

Henry S. Williams, Yale University: "It is the best treatise on this part of the subject which we have seen in America."

R. S. Woodward, Columbia University: "It is admirable for its science, admirable for its literary perfection, and admirable for its unequalled illustrations."

Israel C. Russell, University of Michigan. "I deem it an epoch-making book and one that will vastly extend the study of geology."

BUTTERFLIES

By S. H. SCUDDER

THEIR STRUCTURE, CHANGES, AND LIFE-HISTORIES

With Special Reference to American Forms. Being an Application of the "Doctrine of

Descent" to the Study of Butterflies. With an Appendix of Practical Instruction

12mo$1.50 net

Brief Guide to the Commoner Butterflies of the Northern

United States and Canada

Being an Introduction to the Knowledge of their Life-Histories

New edition. With 21 plates, containing in all 97 illustrations

12mo$1.50

THE LIFE OF A BUTTERFLY

A CHAPTER IN NATURAL HISTORY FOR THE GENERAL READER

16mo$1.00

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The Natural History of Plants

THEIR FORMS, GROWTH, REPRODUCTION

AND DISTRIBUTION

FROM THE GERMAN OF

ANTON KERNER VON MARILAUN

Professor of Botany in the University of Vienna

By F. W. OLIVER

Quain Professor of Botany in University College, London

WITH THE ASSISTANCE OF

MARIAN BUSH AND MARY E. EWART

4to. New edition. 2 vols. The set$11.00

A work for reference or continuous reading, at once popular and, in the modern sense, thoroughly scientific. The new edition is practically identical with the former four-volume edition except that the colored plates in the latter have been omitted. The wood-engravings, over two thousand in number, have been retained.

Prof. John M. Coulter, in The Dial: "Prof. Kerner has brought the most recent researches within reach of the intelligent reader, and in a style so charming that even the professional teacher may learn a lesson in the art of presentation.... It is such books as this that will bring botany fairly before the public as a subject of absorbing interest; that will illuminate the botanical lecture-room."

Prof. Chas. R. Barnes, in The Botanical Gazette: "This lucidity, and the excellent illustrations, not only will introduce the non-botanical reader to the science of botany, but should serve as a lesson to the professional botanist in the art of presentation."

The Nation: "He has succeeded in constructing a popular work on the phenomena of vegetation which is practically without any rival."

GUIDE TO THE STUDY OF INSECTS

AND A TREATISE ON THOSE

INJURIOUS AND BENEFICIAL TO CROPS

FOR THE USE OF

COLLEGES, FARM-SCHOOLS AND AGRICULTURISTS

By ALPHEUS S. PACKARD, M.D.

With 685 illustrations. Ninth edition. xii + 715 pp., 8vo, $5.00 net

PLANT PHYSIOLOGY

By GEORGE J. PEIRCE

Professor in Leland Stanford University

vi + 291 pages, 8vo$2.00

A modern and thoroughly scientific discussion of the general principles of plant physiology, intended for the student or general reader acquainted with the elements of botany.

Science: "The volume is full of original suggestions and differs quite markedly from the old-time works devoted to plant physiology."

William F. Ganong, Professor in Smith College: "I am much pleased with the clearness, proportion, and vigor with which it treats the subject. It seems to me an admirable exposition of the principles of plant physiology as they are understood at the present day, and it should have a wide use."

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MUSHROOMS

By GEORGE FRANCIS ATKINSON

Professor of Botany in Cornell University, and Botanist of the Cornell University

Experiment Station

Recipes for Cooking Mushrooms. By Mrs. SARAH TYSON RORER

Chemistry and Toxicology of Mushrooms. By J. F. CLARK

With 230 illustrations from photographs, including 15 colored plates

320 pages, 8vo. $3.00 net; by mail, $3.23

Educational Review:—"It would be difficult to conceive of a more attractive and useful book.... In addition to its general attractiveness and the beauty of its illustrations, it is written in a style well calculated to win the merest tyro."

Moulds, Mildews, and Mushrooms

By LUCIEN M. UNDERWOOD

Professor in Columbia University

iv + 236 pages, 12mo$1.50

Bradley M. Davis, in the Botanical Gazette:—"Wonderfully free from the dry diagnoses of most systematic descriptions, and everywhere combined with interesting accounts of life-habits and activities.... A marvel in its compactness, with a wonderfully uniform tone throughout, condensed and yet very clear."

Flora of the Northern States and Canada

By PROFESSOR N. L. BRITTON

Director of the New York Botanical Garden

x + 1080 pages, large 12mo$2.25

This manual is published in response to a demand for a handbook suitable for ordinary school use, which shall meet modern requirements and outline modern conceptions of the science. It is based on An Illustrated Flora prepared by Professor Britton in co-operation with Judge Addison Brown, in three volumes. The text has been revised and brought up to date, and much of novelty has been added, but all illustrations are omitted.

Conway MacMillan, Professor in the University of Minnesota, in Science:—"There is no work extant in the whole series of American botanical publications which deals with descriptions of the flowering plants that can for a moment be compared with it, either for a skillful and delightful presentation of the subject-matter or for modern, scientific, and accurate mastery of the thousandfold mass of detail of which such a work must consist."

V. M. Spalding, Professor in the University of Michigan:—"I regard the book as one that we cannot do without and one that will henceforth take its place as a necessary means of determination of the plant species within its range."

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