PHOTOGRAPHY (by J. Thomson, formerly Instructor in Photography, R.G.S. Revised by the late J. McIntosh, Secretary Royal Photographic Society of Great Britain) 51-62 The Camera, 51—Selecting a Camera, 51—The Hand Camera, 52—Camera Stand, 54—Lenses, 54—Exposure Tables, 56—Sensitive Plates or Films, 57—How to keep Plates and Films Dry, 58—Apparatus and Chemicals for Development, 58—Photography in Natural Colours, 61. SECTION III. GEOLOGY (by the late W. T. Blanford, F.R.S. Revised by Prof. E. J. Garwood, F.R.S.) 63-78 General Remarks, 63—Outfit, 64—Collections, 65—Mountain Chains, 70—Coasts, 71—Rivers and River-Plains, 72—Lakes and Tarns, 73—Evidence of Glacial Action, 74—Deserts, 75—Early History of Man in Tropical Climates, 76—Permanence of Ocean Basins, 76—Atolls or Coral-Islands, 77. MEMORANDUM ON GLACIER OBSERVATIONS. (Revised by Alan G. Ogilvie) 78-81 SECTION IV. NATURAL HISTORY (by the late H. W. Bates, F.R.S. Revised by W. R. Ogilvie-Grant, British Museum, Natural History) 82-105 Outfit, 82—Where and What to Collect, 89—Mammals and Birds, 91—Preserving Mammals, &c., in Alcohol, 92—Preparation of Skeletons of Animals, 94—Reptiles and Fishes, 96—Land and Freshwater Mollusca, 97—Insects, 99—Botanical Collecting, 99—Fossils, 104—General Remarks, 104—Observations of Habits, &c., 104. SECTION V. ANTHROPOLOGY (by the late E. B. Tylor, D.C.L., F.R.S.) 106-129 Physical Characters, 106—Language, 110—Arts and Sciences, 113—Society, 118—Religion and Mythology, 124—Customs, 126. NOTE BY PROFESSOR R. R. MARETT 129 QUERIES OF ANTHROPOLOGY (by the late Sir A. W. Franks, K.C.B., F.R.S.) 129-132 ANTHROPOLOGICAL NOTES (by W. L. H. Duckworth, M.D., SC.D., M.A.) 132-137 SECTION VI. INDUSTRY AND COMMERCE (by Sir John Scott Keltie, LL.D., formerly Secretary R.G.S.) 138-147 General Remarks, 138—Minerals and Metals, 140—Vegetable Products, 141—Agriculture, 143—Animal Products, 144—Trade, 144—Climate, 145—Facilities and Hindrances to Commercial Development, 146. SECTION VII. ARCHÆOLOGY (by D. G. Hogarth, C.M.G., D.LITT.) 148-159 Recording, 148—Cleaning and Conservation, 156. SECTION VIII. MEDICAL HINTS (by the late William Henry Cross, M.D. Revised by Andrew Balfour, C.B., G.M.G., M.D.) 160-292