Our Microscopes, Microtomes, Laboratory Glass- 

 ware, Chemical Apparatus, Chemicals, Photo 

 Lenses and Shutters, Field Glasses, Projection 

 Apparatus, Photo-Micro Cameras are used by 

 the leading Lab- ^-_^_^^ oratories and 

 Gover'nt Dep'ts||9BiS Round the World | 



«B 



Catalogs ^^^^gBV Free 



Bausch & Lomb Opt. Co. 



<d Rochester, N. Y. v 



^ New York Chicago Boston Frankfurt, G'yJ 



Photo Lenses! 



and Shutters of every 



kind lot all purposes ; 



Professional, 



Amateur, Process. 



Sold Round the World on all 

 Cameras. Catalogue free. 



i^Bausch & Lorab Opt. Co.^ 



ROCHESTER, N. Y. 

 New York Chicago Boston 



" The Kohiuoor in California'e crown,' 



MOUNT SHASTA . 



There is no more beautiful sight of 

 its kind than Mount Shasta, covered 

 with snow and glistening in the sun. 

 Thousands have traveled across the 

 continent to see it, and felt well repaid 

 for their time. The way to reach it is 

 by the 



NEW YORK CENTRAL LINES 



and their connections. Mount Shasta 

 is only about four and a half days from 

 New York or Boston, and every lover 

 of this country should see it. 



For details of rates • and trains, see a 

 ticket agent of the New York Central. 



A copy of " America's Winter Resorts," 

 will be sent free, on receipt of a two cent 

 stamp by George H. Daniels, General Pas- 

 senger Agent, New York Central & Hudson 

 Eiver Eailroad, Grand Central Station, 

 New York. 



Did you ever taste 



tie real flavor of the CocoaBean? 



ff not. try 



^y^ -^ UNSURPASSED 



^coaAHDCIiocolate 



FOR Eating. Drinking 

 AND Cooking - 



Ills there! 



ALL GROCERS 



RADIUM 



r 



For Experimental and Medical Use. 



We supply radium of high activity and also the 

 Ne'w Spinthariscope, recently invented by Sir Wm. 

 Crookes for showing the marvelous radio-active prop- 

 erties of radium; also the Spinthariscope slides ar- 

 ranged for viewing these phenomena with any micro- 

 scoDB. Each instrument is complete with particle of 

 radium of 300,000 activity and fluorescent screen. 

 No. K8. The complete Spinthariscope, postpaid, $9.00 

 :No. R1. The Spinthurlscope Slide, postpaid, gi7.50 

 Duty free prices to schools and colleges. Send for circulars 

 and catalogue of nilcrosciopes, stereopticons, and educa- 

 tional lantern slides, covering Geology, Geography, Bot- 

 any, History, Astronomy, etc. Agents forE. Leitz, Carl 

 Zeiss, and R. & J. Beck Microscopes. 



WILLIAMS. BROWN & EARLE, 

 Department M, 918 Chestnut St., Philadelphia. 



^ PSYCHOLOGICAL ^ 



J^ APPARATUS ^ 



A list of psychological apparatus supplied 

 to the laboratories of Columbia, Harvard 

 and other leading universities will be sent 

 on application. 



Special apparatus and instruments for psy- 

 chological and physiological research will be 

 made to order. Designs will be submitted 

 for original appai'atus. 



E. HORSTMANN, 



546 West J25th St.. NEW YORK CITY 



