The Microscope. 219' 



NEWS • FRP/A- 

 THE WORKERS- 



THE ANTWERP INTERNATIONAL EXPOSITION OR- 

 GANISED UNDER THE AUSPICES OF THE COM- 

 MUNAL ADMINISTRATION OF THE PROVINCE, ON 

 THE OCCASION OF THE 300th ANNIVERSARY OF 

 THE INVENTION OF THE MICROSCOPE. 



PROGKAMME OF THE EXPOSITION OF GENERAL AND RETROSPECTIVE 



MICROSCOPY. 



Class I. — Mia'oscopes for all current researches. — A. — Microscopes 

 with mechanical stage and sub-stage. — Models with English 

 [long] and continental body tube. — Ordinary microscopes for 

 general researches. — Cheap microscopes for elementary studies. 

 — B. — Special microscopes. — Binoculars, minerological, petro- 

 graphical and similar microscopes. — Microscopes for photog- 

 raphy. — Reversed, travelling, pocket and class microscopes. — 

 Microscopes with two or more bodies. — Microscopes for muse- 

 ums, the stage carrying numerous objects, etc. — Projection 

 microscopes. — Objectives and eye-pieces. Achromatic and apo- 

 chromatic objectives. Dry, water, homogeneous objectives, etc. 

 — Eye-pieces : Huyghenian, Ramsden, orthoscopic, compensat- 

 ing, projection, etc. — Apparatus for illumination. Achromatic 

 and non-achromatic condensers. 



Class II. — Illuminating apparatus. Petroleum and gas lamps ,'. 

 apparatus for oxyhydrogen light ; apparatus for arc and incan- 

 descent electric lighting ; special electric piles. 



Class III. — Photomicrof/raphic apparatus. Special microscopes.. 

 — Various cameras. — Photomicrographs. 



Class IV. — Various appmratus. Binocular apparatus adjustable 

 to any microscope. — Rotators. — Adapters. Micro-spectroscopes. 

 — Polarising apparatus. — Camera lucidas for the microscope ver- 

 tical, inclined and horizontal. — Goniometers. — Ha?matimeters. — 

 Chromometers. — Growing cells. — Compressors.— Moving stages. — 

 Erectors. — Binocular and stereoscopic eye-pieces. — Abbe diffrac- 



