CONTENTS. 
SECTION I. 
PAGE 
Meteorology and Climate (by Hugh Robert Mill, d.sc., led., f.r.s.e., 
late Vice-President of the Royal Meteorological Society) . . 1-51 
General Remarks, 1—Non-Instrumental Observations, 2-11—Instru¬ 
mental Observations, 11-31; Observations for forecasting Weather, 
32-41—List of Extra-European Weather Services, 42-43—Table 
of Relative Humidity, 44-50—Isothermal, Isobaric and Rainfall 
Maps, 50—Table showing the Pressure of Saturated Aqueous 
Vapour in Inches of Mercury at Lat. 45° for each degree of Fahr. 
from —30° to 119°. 
SECTION II. 
Photography (by the late W. F. Donkin, m.a., f.C.s. Revised and 
brought up to date by J. Thomson, Instructor in Photography, R.G.s.) 52-64 
Camera, 53 — Hand Cameras, 54 — Slides for holding the Sensitive 
Plates, 55—Focussing Cloth, 55—Camera Stand, 55—Level for 
Camera, 55—Lenses, 56—Focus, 57—Exposure Tables, 57—Sensi¬ 
tive Plates or Films, 58—How to keep Plates and Films dry, 59— 
Apparatus and Chemicals for Development, 60—Photography in 
Natural Colours, 64. 
SECTION III. 
Geology (by W. T. Blanford, f.r.s.) ....... 65-79 
General Remarks, 65 — Outfit, 66 — Collections, 67 — Mountain 
Chains, 72 — Volcanoes and Volcanic Rocks, 73—Coasts, 73 — 
