APPLETONS' SUPPLEMENTARY READERS. 
Nature Study Readers. 
By J. W. Troeger, A. M., B. S. A Graded and Pro¬ 
gressive Series of Readers for Supplementary Use. Five 
volumes. Illustrated. i2mo. Cloth. 
1. Harold’s First Discoveries.25 cents. 
2. Harold’s Rambles. 35 “ 
3. Harold’s Quests.. 45 “ 
4. Harold’s Explorations.50 “ 
5. Harold’s Discussions.60 “ 
This series begins with objects of real interest to children, and 
progresses from the simple to the more complex, from features appeal¬ 
ing to child mind to form, use, adaptation, and relation. 
For instance, the first book touches upon the general appearance of 
trees, what they need for their growth and what they give, etc.; the 
second book similarly describes the common trees not mentioned in the 
first book, and treats of the growth and uses of different woods; the 
third book tells about the grain and strength of woods, the structure 
and function of roots and leaves, including special adaptations; the 
fourth book considers the great forests and their uses to man ; and the 
fifth discusses trees as a factor in the economy of nature. They are 
not intended to exhaust any of these subjects, but to describe pleasing 
and economic features so as to interest the child in his environment, to 
lead him to ask himself questions, and to beget sympathy with nature. 
Other subjects are treated in like manner, such as plants, insects, 
birds, fishes, mammals, minerals, phenomena of air and water, etc. 
D. APPLETON AND COMPANY, NEW YORK. 
