SCIENCE 



NBW SBRIBa 



Vol. XXXVIII. No. 982 



Friday, October 24, 1913 



Single Copies, 15 Cts. 

 Annual Stiesokiption, 85.00 



A New Fine Focusing 

 Adjustment 



New in design; gives very slow motion 

 — twelve and one-half revolutions of 

 micrometer head equal one revolu- 

 tion of head of ordinary microscope; 

 operating head turned clockwise al- 

 ways moves objective in the same direc- 

 tion as does the coarse adjustment 

 head turned the same way, with 

 -positive stops at upper and lower 

 limits of motion; has automatic take- 

 up for wear; ceases to act when ob- 

 jective touches the slide. 



Microscope FFS8 is first of new 

 series offered. Price, complete, 

 $72.00. Special price to schools 



Descriptive circular will be 

 sent on request 



NEW MICROSCOPE FFS8 



BAUSCH & LOMB OPTICAL CO. 



409 St. Paul St. ROCHESTER, N. Y. 



NEW YORK: 200 Fifth Ave. 

 WASHINGTON: 613 Fifteenth St., N.W. 

 CHICAGO: 122 S. Michigan Blvd. 



SAN FRANCISCO: 154 Sutter St. 

 FRANKFURT, A.M.: G.m.b.H. 31 Schillerstrass 

 LONDON: 37 and 38 Hattoa Garden, E.C. 



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