15 
PROCEEDINGS OF THE SOCIETY , . 
Meeting, December 21, 1921 
„ January 18, 1922 
„ February 15, 1922 
Deport on the Work of the Biological Section during the 
Session 1920-21 
Annotated List of the Metallurgical Specimens presented 
to the Royal Microscopical Society by the City of 
Birmingham, 1921 
PAGE 
101 
103 
104 
109 
111 
112 
Authors of Papers printed in the Transactions are entitled to 25 copies of their 
communications gratis. Extra copies can be had at moderate charges on application 
to the Secretary. 
TRADE DIRECTORY and INDEX TO ADVERTISERS. 
Page 
Atha, J. W. & Co., 8 Southampton Row, London, W.C.l 1 
Bausch & Lomb Optical Co., Ltd., 37 Hatton Garden, London, E.C.l ... 6 
Beck, R. & J., Ltd., 68 Cornhill, London, E.C.3 ... ... ... Cover iv 
British Drug Houses, Ltd., Graham Street, London, N.l ... ... ... 2 
Browning, John, London, W.C.2 ... ... ... ... ... ... 14 
Cambridge & Paul Instrument Co., Ltd., Cambridge, and 45 Grosvenor 
Place, London, S.W.l ... ... ... ... ... ... Cover ii 
Clarkson’s, 338 High Holborn, London, W.C.l ... ... ... ... 14 
Dale & Hollins, 11 & 29 Sicilian Avenue, London, W.C.l ... ... ... 10 
Dolland’s, 35 Ludgate Hill, London, E.C.4 ... ... ... ... Cover ii 
Dulau & Co., Ltd., 34 Margaret Street, London, W.l... ... ... ... 14 
Flatters & Garnett, Ltd., 309 Oxford Road, Manchester ... ... ... 6 
Foyle, W. & G., Ltd., 121 Charing Cross Road, London, W.C.2 ... ... 6 
Gallenkamp, A. & Co., Ltd., 19-21 Sun Street, Finsbury Square, London, 
E.C.2 12 
Gurr, George T., 35 Perrymead Street, Fulham, London, S.W.6 ... ... 8 
Hawksley & Sons, 83 Wigmore Street, London, W.l ... ... ... ... 4 
Heffer, W., & Sons, Ltd., 4 Petty Cury, Cambridge ... ... ... ... 4 
Kodak, Ltd., Kingsway, London, W.C.2 ... ... ... ... ... 8 
Leitz Microscopes ... ... ... ... ... ... ... ... ... 10 
Lewis, H. K., & Co., Ltd., 136 Gower Street, London, W.C.l ... Cover ii 
Ogilvy & Co., 18 Bloomsbury Square, London, W.C.l ... ... ... 10 
Rheinberg’s Eye-piece and Stage Micrometers, etc. ... ... ... ... 6 
Rudolph & Beesley, 65 Margaret Street, Oxford Circus, London, W.l ... 14 
Spencer Lens Co., Buffalo, New York, U.S.A., and 83 Wigmore Street, 
London, W.l ... ... ... ... ... ... ... ... ... 4 
Stevens’s Auction Rooms, Ltd., 38 King Street, London, W.C.2 ... ... 10 
Wallace Heaton, Ltd., 119 New Bond Street, London, W.l... ... ... 12 
Watson, W., & Sons, Ltd., 313 High Holborn, London, W.C 2 ... ... 16 
Wheldon & Wesley, Ltd., 38 Great Queen Street, London, W.C.2 ... ... 10 
Wratten Specialities for Microscopy ... ... ... ... ... ... 8 
