JOHN J. HEATH, 



SstELblisliecl 1828. 



General Engraver, Stationer, etc. 



BRASS DOOR PLATES. 



Medical Account Forms Engraved & in Facsimile. 

 Fleet; 5tr*eet, SixiYiinex* Ro^w, 



A^l T T T T fTl TJ Of tlie late Firm of 



LITHOGRAPHER, 



Illustrations for Scientific Publications 



Carefully reproduced from Natural Specimens or Drawings. 

 Estimates, and Specimens or work sent on application. 



II4« VILLIERS ROAD, WILLESDEN GREEN. 



LONDON, N.W, 



R. FIELD & Co., 



Opticians and Scientific Instrument 

 142, Suffolk Street, Birmingham. 



Makers of Established ISIT*. 



WRIGHT & ANDERTON'S Striated Silver Lantern Screens. 

 BAYLEY'S Polarimeter. 

 WELDO^N Range Finder, &c , &c. 



STUDENT'S MICROSCOPE 



Of best Continental model, with best diagonal rack and pinion 

 course adjustment, best triangular bar screw fine adjustment, 

 draw tube, joint for inclination, ^ iu or ^r-iu objective, and , 

 i-in. (double combination) objective, and eye-piece, &c., in case, 

 £5 - 5 - O. 



Please mention this Journal in rejili/imj to Adcertisements. 



