nformation of the edible kinds, and stimulates some
students to undertake the advancement of our knowledge of this group, it
will serve the purpose the author had in mind in its preparation.

I wish here to express my sincere thanks to Mrs. Sarah Tyson Rorer for
her kindness in writing a chapter on recipes for cooking mushrooms,
especially for this book; to Professor I. P. Roberts, Director of the
Cornell University Agricultural Experiment Station, for permission to
use certain of the illustrations (Figs. 1--7, 12--14, 31--43) from
Bulletins 138 and 168, Studies and Illustrations of Mushrooms; to Mr. F.
R. Rathbun, for the charts from which the colored plates were made; to
Mr. J. F. Clark and Mr. H. Hasselbring, for the Chapters on Chemistry
and Toxicology of Mushrooms, and Characters of Mushrooms, to which their
names are appended, and also to Dr. Chas. Peck, of Albany, N. Y., and
Dr. G. Bresadola, of Austria-Hungary, to whom some of the specimens have
been submitted.

GEO. F. ATKINSON,
Ithaca, N. Y., October, 1900.
Cornell University.

SECOND EDITION.

In this edition have been added 10 plates of mushrooms of which I did
not have photographs when the first edition was printed. It was possible
to accomplish this without changing the paging of any of the descriptive
part, so that references to all of the plants in either edition will be
the same.

There are also added a chapter on the "Uses of Mushrooms," and an
extended chapter on the "Cultivation of Mushrooms." This subject I have
been giving some attention to for several years, and in view of the call
for information since the appearance of the first edition, it seemed
well to add this chapter, illustrated by several flashlight photographs.

G. F. A.
September, 1901.

TABLE OF CONTENTS.

PAGE
Chapter I. Form and Characters of the Mushrooms, 1
Chapter II. Development of the Mushroom, 5
Chapter III. Gill Bearing Fungi; Agaricaceae, 17
Chapter IV. The Purple-Brown-Spored Agarics, 18
Chapter V. The Black-Spored Agarics, 32
Chapter VI. The White-Spored Agarics, 52
Chapter VII. The Rosy-Spored Agarics, 138
Chapter VIII. The Ochre-Spored Agarics, 150
Chapter I