vi CONTENTS, 
Page 
The Study of Hydro-aromatic Substances.—Report of the Committee, con- 
sisting of Dr. E. Divers (Chairman), Professor A. W. Crossiny (Secretary), 
Professor W. H. Perky, Dr. M. O. ForstEr, and Dr. H. R. Lz Sunvr ... 104 
Wave-length Tables of the Spectra of the HKlements and Compounds.—Report 
of the Committee, consisting of Sir H. E. Roscozn (Chairman), Dr. Mar- 
SHALL Warts (Secretary), Sir Norman Locxypr, Professor Sir JAMES 
Dewar, Professor G. D. Liverne, Professor A. Scuuster, Professor W. N. 
Hanrtzey, Professor WoLcorr Gisss, Sir W.pp W. Asney, and Dr. W. E. 
ADEN EY! A cvenaainse rd: cetsunceeses nesses gee da sincsicianis pu ceaiases< csistist eeisetses teem amaennn 116 
Dynamic Isomerism.—Report of the Committee, consisting of Professor H. E. 
Armstrone (Chairman), Dr. T. M. Lowry (Secretary), Professor SypNuy 
Youne, Dr. J. J. Dopsrz, Dr. A. Lapwortu, Dr. M. O. Forster, and 
Dr. C. H. DescH. (Drawn up by the Secretary) ............cessesresececssnssees 270 
The Study of Isomorphous Derivatives of Benzene Sulphonic Acid.—Report 
of the Committee, consisting of Professors H. A. Miprs (Chairman), H. E. 
ARMSTRONG (Secretary), W. P. Wynne, and W. J. POPE ........esceceeee cues 272 
The Applications of Grignard’s Reaction—By Atpx. McKernzim, M.A., 
DSS MERE D AS 8 i aeaseas dates aianies catoceeuasatats <etctans cegerticasa dhsoeewetere cavanaae 278 
Investigation of the Fauna and Flora of the Trias of the British Isles.—Fifth 
Report of the Committee, consisting of Professor W. A. Hprpman (Chair- 
man), Mr. J. Lomas (Secretary), Professor W. W. Warts, Professor P. F. 
KENDALL, Professor A.C, Spwarp, Messrs. H. C. Beastzy, E. T. Newron, 
and W. A. E. UssHer, and Dr. A. SmitH Woopwarp. (Drawn up by 
ELE OOFOURTY) . vavesnates cass vouselee resins co enacdesnchins consol y coder teapesas Seuteht Cardy 298 
On a Mandible of Labyrinthodon leptognathus (Owen). By A, Sire 
NYOOD WARD PATSD ABA. S!a.doret tres sc hte bctoas dae coeicaseen ciate eeee a 298 
Report on Footprints from the Trias. Part V. By H.C. Brastzy ... 300 
On a Footprint Slab in the Museum of Zoology, University of Liver- 
pool, > By J, Lomas cA cRsO.5.3,2.Gt0s:),. <ccdsecacavetes suet enentts eae 304 
The Flora and Fauna of the Trias (Keuper only) in Leicestershire, 
with some Notes on that of the surrounding counties. By A. R. 
EL OR WO ODF: us 2 Bing ta deh edge aa Saget cts tonto eens s antes eee era 306 
A Bibliography of Works referring to the Flora and Fauna of the 
Trias (Keuper) in Leicestershire, and in some outlying localities...... 311 
Note on the Fossils from the Lower Keuper of Bromsgrove. By L. J. 
Whats! BoA | EGGS 62 Bh ese as eh nie ee en 312 
The Faunal Succession in the Carboniferous Limestone of the South-west of 
England.—Report of the Committee, consisting of Professor J. W. 
Grecory (Chairman), Dr. A, VaueHan (Secretary), Dr. Wanetron Hiyp, 
and Professor W. W. Warts, appointed to enable Dr. A. Vaughan to con- 
tinue his Researches thereon. (Drawn up by the Secretary) ........s000..c06 318 
I.—The Avonian Sequence in the Gower .......:ce:seccceeeeseeeeeeeneenees 313 
II.—The Carboniferous Sequence from Rush to Skerries, Co. Dublin... 314 
LLT.—Palsontologacal 7Work: sccsce co-ncazccovdhoeevacctslcusssutAbe auemeapesane 314 
[nyestigation of the pre-Devonian Beds of the Mendips—Report of the 
Committee, consisting of Mr. H. B. Woopwarp (Chairman), Professor 
S. H. Reynoxps (Secretary), Professor C. Luoyp Morean, and Rey. H. H. 
Winwoop. (Drawn up by the Secretary) ......cccsscesecssececeessesaeeeesenees 815 
Life-zones in the British Carboniferous Rocks.—Report of the Committee, 
consisting of Mr. J. E. Marr (Chairman), Dr. WaEELron Hrnp (Secretary), 
Dr. F, A. Barner, Mr. G. C. Crick, Dr. A. H. Foorp, Mr. H. Fox, 
Professor E. J. Garwoop, Dr. G. J. Hinpx, Professor P. F. Kmnpatt, 
Mr. R. Kinston, Mr. G. W. Lamptvuen, Professor G. A. Lesour, Mr. B. N. 
Pracu, Mr. A. Srranan, Dr. A. VAUGHAN, and Dr. H, Woopwakp ...... 316 
