Levison, J. J. Studies of Trees. Wiley. 1914. 253 p. Illus. $1.60. Identification, structure and care of trees; woods and their use.
Mathews, F. Schuyler. Familiar Features of the Roadside. Appleton. Illus. $1.75. A handbook to aid in identifying flowers and trees, insects and birds, commonly found.
Mathews, F. Schuyler. Familiar Flowers of Field and Garden. Appleton. 1915. 306 p. Illus. $1.40. Identification, arranged by months; illustrated with about 200 drawings.
Stark, F. W. Wild Flowers Every Child Should Know. Doubleday. $.50. The most common of the wild flowers. Some illustrations in color.
Dixon, Royal. The Human Side of Plants. Stokes. 1914. 201 p. Illus. $1.50. Interesting things that plants do, such as going to sleep, swimming, walking, foretelling the weather; has all the human interest of purely fanciful tales about flowers, and is scientifically accurate.
Duncan, Frances. When Mother Lets us Garden. Moffatt. 1910. 111 p. Illus. $.75. Simple directions for outdoor and indoor gardening. Breathes the spirit of the garden; charming pictures and quotations.
5. Physics, Chemistry, Physical Geography, Geology, Astronomy.
Clark, Bertha M. General Science. A. B. Co. 1912. 363 p. Illus. $.80. Physics and chemistry of everyday life. Suggestions for observations and experiments. Source book.
†Holden, E. S. Real Things in Nature. Macmillan. 1910. 443 p. Illus. $.65. Comprehensive, including something of each of these sciences, and some primitive life history.
Blackwelder, Eliot, and Barrows, H. H. Elements of Geology. A. B. Co. 1911. 475 p. Illus. Bibl. $1.40 Structure of the earth, work of atmosphere, streams, glaciers; changes in oceans, lakes, rivers; how mountains and plains are formed; the geological ages of the past. Source book.