drame and climatic conditions are favorable for the growth of forest trees, and about one hundred thousand acres of these lands have been planted to timber. A topographic survey of Alaska has been in progress since 1890, and nearly 44 percent of its area has now been mapped. About 15 percent of the Territory has been covered by maps on a scale of 1/2,000,000 (1 inch = nearly 8 miles). For most of the remainder of the area surveyed the maps published are on a scale of 1/640,000 (1 inch = nearly 4 mile)-. For some areas of particular economic importance, covering about 4,300 square miles, the maps published are on a scale of 1/80,000 (1 inch = nearly 1 mile) or larger. In addition to the area covered by topographic maps, about 11,200 square miles of southeastern Alaska has been covered by planimetric maps on scales of 1/40,000 and 1/80,000. The Hawaiian islands have been surveyed, and the resulting maps are published on a scale of 1/640,000. The sketch represents a river valley that lies between two hills. In the foreground is the sea, with a bay that is partly enclosed by a hooked sand bar. On each side of the valley is a terrace into which small streams have cut narrow gullies. The hill on the right has a rounded summit and gently sloping sides. For 10 cents each; some special maps are sold at different prices. A discount of 40 percent is allowed on an order amounting to $5 or more at the retail price. The discount is allowed on an order for maps alone, either of one kind or in any assortment, or for maps together with geologic folios. The geologic folios are sold for 25 cents or more each, the price depending on the size of the folio. A circular describing the folios will be sent on request. Applications for maps or folios should be accompanied by cash, draft, or money order (not postage stamps) and should be addressed to THE DIRECTOR, United States Geological Survey, Washington, D. C. November 1937. STANDARD SYMBOLS CULTURE (printed in black) City or village Roads and buildings Ruins Cliff dwelling Good Public road Poor Public or private road Trail Railroads Electric railroad Tunnel Power transmission line Wharves Breakwater and jetties Bridge Drawbridges Ferry (point symbol) Ford Dam Dam with lock Canal lock (point symbol) U.S. township and section lines and recovered corners State line County line Civil Township or district line Reservation line Land grant line City village, or borough line Small park or cemetery line Trangulation point or transit traverse station U.S. mineral monument Boundary monument Bench mark (point symbol) Cemeteries Church, School (point symbol) Cake ovens Tanks and oil reservoirs Oil and gas wells Mine or quarry Prospect Shaft Mine tunnel (showing direction) Mine tunnel Light house or beacon Coast Guard station RELIEF (printed in brown) Elevation above mean sea level (point symbol) Contours Depression contours Levee Streams Falls and rapids Intermittent streams and ditches Canals or ditches Aqueducts or waterpipes Aqueduct tunnels Lake or pond Unsurveyed stream and abandoned canal Wash Cliffs Mine dumps Buildings or mining debris Sand and sand dunes Intermittent lake Glacier Spring Well Marsh Submerged marsh WATER (printed in blue) WOODS (when shown, printed in green)