Travel. Up the Skeena River. George A. Dorsey, 181 Tree Planting in Arid Regions. (Frag.), 282 Trees as Land Formers. (Frag.), 858 Trotter, Spencer. The Coming of the Catbird, 772 True Tales of Birds and Beasts. D. S. Jordan, 352 Udden, J. A. A Geological Romance*, 222 Varney, G. J. The Moon and the Weather. (Corr.), 118 Vegetation a Remedy against the Summer Heat of Cities. Dr. S. Smith, 433 War, The "Hell" of. (Frag.), 718 Wave Length and other Measurements. (Frag.), 137 Wave Power, The Utilization of. (Frag.), 715 Weasels, Concerning. W. E. Cram*, 786 Weir, J., Jr. The Herds of the Yellow Ant*, 75 Wells, David Ames, Death of. (Table), 271 " " " Principles of Taxation, 319, 490, 736 West Indies, Physical Geography of. F. L. Oswald, 802 Wheat-growing Capacity of the United States. E. Atkinson, 145 Wheat Problem, The, again. E. Atkinson, 759 White Lady Mountain, The. (Frag.), 569 Whittle, C. L. The Science of Observation*, 456 Willis, C. W. The Mongoose in Jamaica*, 86 Wilson, L. L. W. Nature Study in the Philadelphia Normal School, 313 Winds of the Sahara. (Frag.), 717 Words of a Master. (Table), 699 Yellow Ant, The Herds of the. J. Weir, Jr.*, 75 THE END. Transcriber's Notes: Words surrounded by _ are italicized. Words surrounded by = are bold. Obvious printer's errors have been repaired, other inconsistent spellings have been kept, including inconsistent use of hyphen (e.g. "co-operative" and "cooperative") and capitalisation (e.g. "Fresh-Water" and "Fresh-water"). Captions added to captionless illustrations. End of the Project Gutenberg EBook of Appletons' Popular Science Monthly, April 1899, by Various