THE MICROSCOPICAL JOURNAL ADVERTISER- 1 



Dr. HENRI VAN HEURCK'S iCROSCOPE 



FOR HIGH-POWER WORK AND PHOTOMICROGRAPHY, 



AS MADE BY W. WATSON & SONS TO THE SPECIFICATION 

 OF Dr. VAN HEURCK OF ANTWERP. 



v*^ Fitted with fine adjustments of utmost 



^ .^^> ,^B^ sensitiveness and precision, not 



^I^SSk. sK^^ liable to derangement by wear. 



Has Rackwork Draw-tube to adjust Ob- 

 m, 'IBK&'^KM jectives to the thickness of Cover 



^-^-^KlK^Sir Glass. 



Can be used with either Continental oi 

 English Objectives, the body length 

 being variable from 142 to 300 milli- 

 meters. 

 /—^^^^. l,^v"«m Fine adjustment to Substage. 



^^^™^m \ As FiGUKED, witli 1 Eyepiece, 



i\\\\^l^^^^^m 1^ Qy^^^ without centering 



'^''^^^%,^ % screws or divisions to 



I^Hm \M^M^ % Also made with Continental 



^k vW \ fo^^ °* *°°* ^^ ^'' 



\^m\\1l\\mk. % Without Eackwork to Draw- 

 ^^^^^1 tube 80 00 



^^1^^^^ Full description of the 



above instrument, and 

 illustrated catalogue of 

 Microscopes and appa- 

 ratus, also classified 



r-Titl-rmam^^^ i r r ^ unimmilinmMllTllMI ''** °^ 40,000 Micro- 

 scopic Objects for- 

 warded post free on 

 application to 



SONS, 



iiuv-SHruii"! liiiiiii iiiiiiiiiiElMiaLZZr mw^n~—i^ 313 High Holborn, 



^fl' l"""ll 1 lillllM B LONDON, w. i. 



'^^^^f^miim^mum^ And 



78 Swanston St., 



.^ELBOLRNE, 



AUSTRALIA. 



E ST A B 

 1837. 



Awarded 30 GOLD and Cher Medals at the principal Internationa! Exhibitions of the World. 



