Our Microscopes, Microtomes, Laboratory Glass- 

 ware, Chemical Apparatus, Chemicals., Photo 

 Lenses and Shutters, Field Glasses, Projection 

 Apparatus, Photo-Micro Cameras are used by 

 theleadingLab-^i^^___ oratories and 

 Gover'nt Dep'ts ■ 55 Round the World j 



S&'/i^ 



SCOPES 



Catalogs 



Fres 



Bausch S Lomb Opt. Co. 



* Rochester, N. Y. 



^NewYork Chicago Boston Frankfurt, G*yJ 



Photo Lenses! 



and Shatters of every 



kind for all purposes ; 



Professional, 



Amateur, Process. 



Sold Round the World on all 

 Cameras. Catalogue free. 



i Bausch & Lomb Opt Co.! 



ROCHESTER. N. Y. 

 Hew York Chicago Boston 



NOTABLE IMPROVEMENTS 



In 



PROJECTION APPARATUS 



The New Reflecting Lantern attachable to any Projec- 

 tion Lantern or Stereopticon, for showing upon the screen 

 prints, photos, engravings, sketches, diagrams, flowers. 

 Entomological and Anatomical Specimens, etc., all in 

 natural colors. Cuts in books may be shown without in- 

 jury to the book. 



1 he New Projecting? Mlcroaconc attachable to any Pro- 

 jection Lantern or Stereopticon. Projection eye piece. Me- 

 diascopeforshowinglargemicrospecunensanacoolingcell. 



The New Projection Spectroscopes and Polarlscopes 

 attachable to any Projection Lantern. 



Lantern Slides to illustrate Educational and Scientific 

 Subjects. We rent slides at low rates. Send for lists, 

 naming particular subject of Interest. 



WILLIAMS, BROWN A EARLE, 



Manufacturers of Stereoptxcons, Microscopes, etc. 

 Department N , 918 Chestnut St., Philadelphia 





The December 1904 Readers' Guide 



indexes over 1000 separate and 

 distinct magazines, containing 

 over 1,500 important articles 

 on every conceivable subject, in 

 one alphabet. Ask to be allowed 

 to use this number. 



The H. W. WILSON COMPANY, Minneapolis, 

 Minnesota. 



Personally Conducted 

 Tours to 



CALIFORNIA 



COLORADO 



UTAH, OREGON 



WASHINGTON 



ARIZONA 



and MEXICO 



VIA THE 



New York Central 



Lines 



Will move in January, February, 

 March and May. 



For particulars, inquire of ticket agents of 

 the New York Central Lines, or enclose a two- 

 cent stamp for a copy of" America's Winter Re- 

 sorts," to George H. Daniels, General Passenger 

 Agent, Grand Central Station, New York. 



|DDB01UNG^ 



"Ready to Serve" 



CHOCOLATE POWDER 



Made from PURE COCOA, SUGARand CREAM. 



QUALITY a PURITY UNEXCELLED. 

 SOLD BY DRUGGISTS fi GROCERS EVERYWHERE. 



