(9 ) 



THE BRITISH MOSS FLORA. 



By E. BEAITHWAITE, M.D. 

 Paet VII. is now ready, price 6s. Subscriptions (10s. Gd.) may be sent to the Author. 



The previous Parts may be had from the Author, at 303, Clapham Road, London. 



New Edition, very much enlarged, 2l8. 



HOW TO WORK WITH THE MICROSCOPE, 



BY LIONEL S. BEALE, F.R.S., 



TEEASUEEE AND FOEMEKLT PEESIDEKT OF THE EOTAL MieKOSCOPICAL SOCIETT. 



TE£! FIFTH EDITION. 



Strongly bound and enlarged to 530 pages, with 100 Plates, some of v/hich are Coloured.^ 



H-A-RI^ISOlSr ,A.3Sri3 SOISrS, F,A.LX. 3Vn.A.IjL. 



KOYAL MICEOSCOPICAL SOCIETY. 



MEET INGS rOE 1884, at 8 p.m. 



Wednesday, Januaet .. .. 9 



„ February . . . . 13 



(^Annual Meeting for Election of 



Officers and Council.) 



„ March .. .. 12 



„ April 9 



THE " SOCIETY " STANDARD SCREW. 



The Council have made arrangements for a further supply of Gauges 

 and Screw-tools for the "Society" Standard Screw for Objectives. 



The price of the set (consisting of Gauge and pair of Screw-tools) is 

 12s. 6d. (post free 12s. lOd). Applications for sets should be made to the 



Assistant-Secretary. 



For an explanation of the intended use of the gauge, see Journal of the 

 Society, I. (1881) pp. 548-9. 



POR SALE, A LARGE BIRrOCULAR MICROSCOPE, 



By Boss, but little used. 7 Objectives, 4 in. to fLth ; complete Set of Eye-pieces, A to 

 F ; Apparatus, &c. ; in Two Mahogany Cabinets. ""Will be sold at less than half-cost. 



On view at Koyal Mioeoscopical Society's Libeaey, King's College, "W.C. 



TO BE SOLO ^ :OAK,G^^IIV. 



A PIEST-OLASS LAEGE BmOOULAE MIOEOSOOPE, COST £65. 



As good as new. By Smith and Beck. With 3 Pairs of Eye-pieces, Draw-tube, and 3 in., IJ in, |, ,4^, and 

 i Object-glasses. Brooke's Double Nose-|iiece. Achromatic Condenser, Wenham's ParaboUc Keifector, 

 Polarizing Apparatus, large Bull's-eye Lens on Stand, Stage Forceps, large Live-box, Frog-plate. The whole 

 packed in upright Spanish Mahogany Case, with one box for containing the apparatus. 



Apply to MK. "WHAKRIE, 50, Beeey Steeet, Liverpool. 



ADVERTISEMENTS FOR THE JOURNAL. 



Mr. Charles Blencowb, of 75, Chancery Lane, W.O., is the authorized 

 Agent and Collector for Advertising Accounts on behalf of the Society. 



