Ward, Practical Exercises in Elementary Meteorology. Ginn & Co. Very helpful to teachers who have to deal with weather phenomena.

Gilbert and Brigham, Introduction to Physical Geography. Appleton. An interesting, authoritative, and well illustrated secondary text on physical geography.

Tarr, New Physical Geography. The Macmillan Company. One of the newest and best high school books.

Salisbury, Physiography. Henry Holt & Company. Most inclusive and best illustrated volume available. An indispensable library reference volume.

Harrington, Mark W., About the Weather. Appleton. Very helpful for teachers in elementary grades.

Dodge, Reader in Physical Geography for Beginners. Longmans. Small volume on physical geography, available as an introduction to the subject.

Biogeography:—

Ratzel, History of Mankind (3 vols.). Macmillan. A very comprehensive book on the races of mankind, the first volume being particularly valuable for its consideration of the problems of race distribution.

Wallace, Island Life. Macmillan. Classic book on animal distribution from geographic standpoint.