National Geographic : 1913 Jul
I MATRPITR |II WASHINGTON D. G.O IU RSE I St OT-orTOWNOKDRS SLICIED iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii mimiIiiiiiiiiiiiiiniiiiiiiiiH~ i iiiiiiiiii Eliminates Guessi it Photograpy!! The simplest, most effective and most accurate instru ment for determining correct time for exposure. Easily and quickly manipulated; compact and always ready for use. No Sensitive Paper Used For Tinting. Exposure Table complete on dial. Essential to the photographer who wants perfect pictures. Orderby mail or from your dealer. write for descriptive booklet. Model 2. . . $5.50 Model 3... $7.50 Dealers--A postal will Spring our special offer. "Geographic readers may depend upon Government Maps at a Bargain Become Acquainted with Your Own District The United States Geological Survey, owing to a recent fire in their building, is holding a sale of valuable geologic folios at so low a price that they are practically given away. Each folio contains a topo graphic base map (usually sold separately at ten cents each), several geologic maps of the same area, with explanatory and de scriptive text regarding rock formation, structure, mineral resources, etc. There were upwards of 200,000 folios stored in the cellar of the building, about 50,000 of which were entirely destroyed, but 15o,ooo copies were only very slightly damaged by smoke and water; therefore, instead of the regular price of 25 and 50 cents each, the folios are being sold at 5 cents each, while they last. A splendid chance to secure maps of the district in which you live, showing the for mation, natural resources, underground water, etc. Write quickly for a descriptive folder of the folios, the area they cover, and the num ber and kind of maps included in each of the 150 different folios covering almost every State in the Union. Address: Director, United States Geological Survey, Dept. G, WASHINGTON, D. C. the character of our advertisers."