Produced by Barbara Watson, Ross Cooling and the Online Distributed Proofreading Canada Team at http://www.pgdpcanada.net CATALOGUE No. 40. MICROSCOPES AND ACCESSORY APPARATUS. ERNST LEITZ WETZLAR GERMANY. Founded in 1850. Branch Offices: NEW-YORK: CHICAGO: BERLIN NW. 411 West 59th Str. 32-38 Clark Str. 45 Luisenstrasse. 30 East 18th Street. 1903. =„Highest award“= Worlds Columbian Exhibition =Chicago 1893=. Contents. New constructions 5 Objectives and Eye-pieces 7 Stands 16 Illuminating Apparatus 20 Complete Microscope Outfits 24 Microscopes for Mineralogical Research 57 Dissecting Microscopes and Lupes 62 Apparatus for Blood Examinations 70 Micrometers 73 Drawing Apparatus 74 Mechanical Stages 78 Photo-micrographic Apparatus 82 Projection Apparatus (Edinger) 84 The Large Projection Apparatus 87 Microtomes 92 Miscellaneous Accessories 99 Publications 104 Index 105 Notice. All previous editions of this catalogue are superceded by the present one, which should be exclusively used in ordering. Orders will be filled at once after their receipt. In ordering care should be taken to give the =number= of each article desired and to state listprice. To avoid delay and misunderstandings, we request that name and address be plainly written. Goods are forwarded at the expense and risk of the purchaser. Our instruments for use in =Universities, Colleges, Schools= &c. of the =United States= are by law free of duty and we shall be pleased to make specially low quotations for such orders. ERNST LEITZ. New Constructions. Since issueing our last catalogue, a number of new apparatus and accessories have been added. The following are the more important ones: 1. A completely =new stand "A"= with extra fine micrometerscrew transmitting its movement directly to the tube. The stand is of elegant appearance and large dimensions, making it especially well adapted for work in photo-micrography. 2. =Stand I= is now fitted out with the new special fine adjustment (each division {1/1000} mm). 3. =Stand II= with round centering stage. 4. =Stand IV= is replaced by a model of larger size. 5. =Photo-micrographic apparatus= for use in horizontal and vertical position, having joint for inclination, large size bellows and plateholder. 6. =Large projection-apparatus= for electric lamp of 30 Ampère with triple collecting lens of 210 mm aperture.