15 
TRADE DIRECTORY and INDEX TO ADVERTISERS. 
Cover 
Atha, J. W. & Co., 8 Southampton Row, London, W.C.l 
Balliere, Tindall & Cox, 8 Henrietta Street, London, W.C.2 
Bausch & Lomb Optical Co., Ltd., 37 Hatton Garden, London, E 
Beck, R. & J., Ltd., 68 Cornhill, London, E.C.3 ... ... ... Cover 
Browning, John, London, W.C.2 
Cambridge & Paul Instrument Co., Ltd., Cambridge, and 45 Grosvenor 
Place, London, S.W.l 
City Sale & Exchange, 52 Cbeapside, London, E.C. ... 
Clarkson’s, 338 High Holborn, London, W.C.l 
Dale & Hollins, 11 & 29 Sicilian Avenue, London, W.C.l ... 
Dolland’s, 35 Ludgate Hill, London, E.C.4 
Dulau & Co., Ltd., 34 Margaret Street, London, W.l... 
Flatters & Garnett, Ltd., 309 Oxford Road, Manchester 
Foyle, W. & G., Ltd., 121 Charing Cross Road, London, W.C.2 
Gurr, George T., 35 Perrymead Street, Fulham, London, S.W.6 
Hawksley & Sons, 83 Wigmore Street, London, W.l. 
Heffer, W., & Sons, Ltd., 4 Petty Cury, Cambridge 
Kodak, Ltd., Kingsway, London, W.C.2 
Leitz Microscopes ... 
Lewis, H. K., & Co., Ltd., 136 Gower Street, London, W.C.l ... Cover 
Longmans, Green & Co., 39 Paternoster Row, London, E.C.4 
Murby, Thomas & Co, 1 Fleet Lane, Ludgate Circus, London, E.C.4 
Ogilvy & Co., 18 Bloomsbury Square, London, W.C.l 
Rheinberg’s Eye-piece and Stage Micrometers, etc. . 
Spencer Lens Co., Buffalo, New York, U.S.A., and 83 Wigmore Street, 
London, W.l 
Stevens’s Auction Rooms, Ltd., 38 King Street, London, W.C.2 
Watson, W., & Sons, Ltd., 313 High Holborn, London, W.C.2 
Wheldon & Wesley, Ltd., 38 Great Queen Street, London, W.C.2 
Wratten Specialities for Microscopy 
Zeiss Microscopes ... 
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NOTICE TO ADVERTISERS 
All Communications respecting Advertisements in the 
Journal of the Royal Microscopical Society should be 
addressed to the Secretary, Royal Microscopical Society, 
20 Hanover Square, London, W.i. 
