Calendar: 1899-1900 Page 883

WATSON SONS' MICROSCOPES for HISTOLOGY BACTERIOLOGY WATSON SONS' "H" EDINBURGH STUDENT'S MICROSCOPE is specially suitable for Bacteriological and high power research and is in use at all the leading laboratories No Microscope at anything like the same price combines so many mechanical conveniences and workmanship of so perfect character Stand only with one Eyepiece as 'figured with Rackwork Coarse Adjustment Lever Fine Adjustment mechanical movements to Stage and Compound Substa £9 10s The above Stand fitted with Eyepieces 1-in t5 in and ΎΚΛη Oil Immersion Objectives Abbe Illuminator with Iris diaphragm Dust- proof Triple Nosepiece complete in Mahogany case £21 WATSOiV SOJVS' FRAM roscope Highest-Class MICROSCOPE at very Moderate Cost Coarse Adjustment -Watson's diagonal rack and pinion Fine Adjustment Watson's lever form Tripod Foot with 7-inch spread Stage -Nelson's horseshoe pattern by 3f in --- Body Length 152 mm With draw-tube ex- tended 250 mm Objective thread at lower end of draw-tube Fittings of Universal size throughout Under Fitting arranged to turn out from optic axis when desired Prices "Fram" Microscope with one Eye- piece Watson's Parachromatic in and choice of in in or in complete in Mahogany Case £6 15s XI Complete as per Set with the addition of Abbe Illuminator having Iris Diaphragm and extra Eye-piece £8 5s Set Set Full Illustrated Catalogue of Microscopes No forwarded post free on application Watson's Catalogue of Micro- Objects contains full particulars of Public Health Specimens slides illustrating Hist- ology Pathology Bacteriology Urinary Dental and other subjects Post free on application to WATSON SONS 313 HIGH HOLBORN LONDON 16 FORREST ROAD EDINBURGH 23 and