THE BUTTERFLY BOOK

By Dr. W. J. HOLLAND

This book on American butterflies, by Dr. W. J. Holland, has introduced thousands of readers to the delightful study of butterflies and their development. Its 48 color plates are the best which have been produced by the three-color process. In these and the text cuts are shown more than five hundred different species. Dr. Holland’s collection of these insects is the best in the United States, barring none, and he has throughout used his own specimens in preparing the plates. Chapters showing how to collect and preserve butterflies add greatly to the value of the book. It contains 382 text pages, 10 pages of index.

Attractively bound in green cloth, decorated in gold. Size of volume 7 × 10.

Price, $3.00 net; $3.30 postpaid

THE MOTH BOOK

By Dr. W. J. HOLLAND

This book serves as an introduction to the study of moths, but the student who has fully mastered the contents is as far advanced in his studies as are many men who were a few years ago regarded as eminent specialists. It is the standard reference book of North America on the subject.

Dr. Holland, Director of the Carnegie Museum, Pittsburgh, is one of the leading entomologists of the country and has had more experience in mounting and artistically posing moths and butterflies than any other living man.