JOHN J. HEATH, 



SstCLlblisHed 1828. 



General Engraver, Stationer, etc. 



BRASS DOOR PLATES. 



Medical Account Forms Engraved & in Facsimile. 

 Fleet; St]:'eet, SuntiiYieif* Ro^inr, 



A^J' Y,T T T ^11 WJ Of the late Firm of 



■ l^# I kL KJ^ k n ■ F. Huth, Edinburgh. 



LITHOGRAPHER, 



Illustrations for Scientific Publications 



Carefully reproduced from Natural Specimens of Drawings 

 Estimates, and Specimens of work sent on application. 



114, VILLIERS ROAD, WILLESDEN GREEN. 



LONDON, N.W. 



R. FIELD & Co., 



Opticians and Scientific Instrument 



iviak:e:rs, 



142, Suffolk Street, Birmingham. 



Makers of Established 1817. 



WRIGHT & ANDERTON'S Striated Silver Lantern Screens. 

 BAYLEY'S Polarimetep. 

 WELDON Range Finder, &c , &c. 



STUDENT'S MICROSCOPE 



Of best Continental mode], with best diagonal rack and pinion 

 course adjustment, best triangular bar screw fine adjustment, 

 draw tube, joint for inclination, |-in. or ^-in. objective, and 

 i-in. (double combination) objective, and e5'e-piece, &c., in case, 

 £5 - 5 - O. 



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