CONTENTS. Vll 



Melvill, J. Cosmo, M.A. — Exhibit of specimens of ALgilopSy 



Triticnm, and Agropyrum ... ... ... ... ... xviii 



Exhibit of series of distortions and deformities of Planorbis 



spirorhis L — ... ... ... ... ... ... ... xxii 



Rogers, Thomas. — Exhibit of collection of Bryozoa from S. Australia. xvi 



Exhibit of Endodonta luaterhottsia from Lord Howe Island and 



land shells from Trinidad... ... ... ... ... ... xxvi 



On the geographical distribution of /^(r//a/z;/rt! «f?V«/a xxvi 



Exhibit of fresh-water shells from Loando xxviii 



Stirrup, Mark, E.G. S.— Address on Finland xiii 



Exhibit of specimens of silicified wood from Egypt ... ... xxiv 



The composition and structure of spore-coal and bogheads ... xxvii 



Exhibit of zircons, garnets and sapphires from volcanic rocks in 



France ... ... ... ... ... . .. ... xxviii 



Sykes, Mark. — P^xhibit of Termites from Sierra Leone xxv 



On mimetic forms among lepidopterous insects ... .. ... xxvii 



Thorp, Thomas. — A mechanical device lot the solution of problems in 



refraction and polarization ... ... ... ... ... ii 



Exhibit of copies of dififraction-gratings on celluloid films... ... xxii 



Wetss, F. E., F.L.S. — Exhibit of some flowering specimens of Dog's 



Mercury ... ... ... ... ... ... ... ... vii 



¥,x\\\\y\\. oi ^\>&c\mtxx oi Plowrightia ?norlwsa ... ... ... ix 



Y^\\nh\i o{ h\.\c\\^C2L\.\on oi Peziza ai-tiginosa ... ... ... ix 



General Meetings vii, x, xvii, xxi 



Special Meeting for the delivery of the Wilde Lecture xxix 



Annual General Meeting xxxiv 



Meetings of the Microscopical and Natural History Section : — 



Ordinary... ... ... ... ... ... xiii, xiv, xxiv, xxv, xxvi 



Annual xxvii 



Report of Council, April, 1898, with Obituary Notices of Francesco 

 Brioschi, Victor Meyer, Julius von Sachs, Edward James 

 Stone, George Henry Greville Anson, Thomas Ashton, 

 William Brockbank, William Grim.shaw, Peter Hart, James 



Heelis, James Hey wood, and John Ramsl)ottom ... ... xxxvi 



Treasurer's Accounts... ... ... ... ... ... ... Ixiii 



Report of the Microscopical and Natural History Section ... ... Ixvi 



List of the Council and Members of the Society ... .. ... ... Ixvii 



List of the Awards of the Wilde and Dalton Medals and of the 



J^remium ... ... ... ... .,. ... ... ... Ixxx 



