THREE IN ONE 



Perfection in a Photographic Lens is 

 possible only when 



Perfect Computation 



Perfect Grinding, and 



Perfect Mounting 



are combined in the same instrument 



The most perfect computation does not lead to perfect pictures unless the most 

 perfect mechanical devices are applied in the manufacturing. 



Highly polished surfaces are of no avail unless they are in absolute accordance 

 with perfect computation. 



A perfectly computed and perfectly ground and polished lens is not better than 

 a rectilinear when it is carelessly mounted. 



The triple alliance of perfect computation, perfect grinding, and perfect mount- 

 ing made for the 



GOERZ LENSES 



the high reputation they deservedly earned for themselves 



C. P. GOERZ AMERICAN OPTICAL COMPANY 



CHICAGO 

 1514 Heyworth Building 



NEW YORK 

 52 Union Square East 



SAN FRANCISCO 

 703 Claus Spreckels Building 



Guaranteed 

 Waterproof Silk Tents 



CJ We manufacture a complete line of 

 Tents and Camp Goods for Engineers, 

 Prospectors, and Explorers. 



COMCo 



Bran v 



<l Our goods are of the highest quality 

 and we are prepared to fill all orders 

 promptly. 



Camp Outfit Manufacturing Co. 



144 WATER STREET :: NEW YORK CITY 



Send for our Catalogue C 



"Every man and woman should know 

 how to use firearms with safety." 



— Theodore Roosevelt. 



The Pistol and Revolver 



By A. L. A. HIMMELWRIGHT 

 President of United States Revolver Association. 



A HANDY pocket-size volume of 157 pages of 

 practical information covering the entire 

 subject of Pistol and Revolver shooting. 

 This work is strictly up-to-date, including the 

 latest developments in smokeless powder; the 

 1908 Revolver Regulations and Practice of the 

 United States Army, the United States Navy and 

 the National Guard; the Annual Championship 

 Matches and Revised Rules and Regulations of 

 the United States Revolver Association, etc. Be- 

 sides being a useful, practical hand-book for the 

 experienced marksman, the work will also 

 prove particularly valuable for beginners. 



Contents.— Historical: Arms— Military, Target, 

 Pocket; Ammunition— rim fire, central fire; 

 Sights; Position; Target Shooting; Revolver 

 Practice for the Police; Pistol Shooting for Ladies; 

 Clubs and Ranges; Hints to Beginners; Selection 

 of Arms; Manipulation; Position and Aiming; 

 Target Practice; Cleaning and Care of Arms; Re- 

 loading Ammunition— primers, shells, bullets, 

 powders, reloading. Appendix.— Annual Cham- 

 pionship Matches of the United States Revolver 

 Association, Rules and Regulations governing 

 the matches, etc. Records of the United States 

 Revolver Association. 



The volume is printed on fine coated paper with 

 many illustrations and is bound in three styles: 

 Paper, 60 cents; Cloth, $1.00; Full Morocco, $1.50. 



Write at once, enclosing remittance, and we 

 will mail direct. 



National Geographic Magazine 



WASHINGTON, D. C. 



Your courtesy in mentioning the Magazine when writing will be appreciated 



