iv CONTENTS. 
Page 
Fourth Report of the Committee for Exploring Kent’s Cavern, Devon- 
shire. The Committee consisting of Sir Cuartes Lyett, Bart., Pro- 
fessor Puriuirs, Sir Joun Luszocx, Bart., Mr. Joun Eyans, Mr. 
Epwarp Vivian, Mr. Grorce Busx, and Mr. Witiiam PeEnceiy 
RC POCLEL Mrs cle es we dc thle clei ee oe oe cbs SO ek ss 45 
On Puddling Iron. By C. W. Sremens, F.RS............-020-ee- 58 
Fourth Report on the Structure and Classification of the Fossil Crustacea. 
By Henry Woopwarp, F.G.S., F.Z.8., of the British Museum ...... 72 
First Report on the British Fossil Corals. By P. Marri Duncan, M.B. 
hod RS, 8 G.8., Sec. Geol. Sie... . one as =< Re eee 75 
Report of a Committee appointed to investigate Animal Substances with 
the Spectroscope. By HE. Ray Lanxmusven ..........0.000-d000 se 113_ 
Second Report of the Committee on the Condensation and Analysis of 
Pables of Steamship Perko’ 5.5... 6... Fa unas tle selene 6 114 
On the Results of Spectrum Analysis as applied to the Heavenly Bodies ; 
a Discourse delivered before the British Association at Nottingham, on 
August 24,1866. By Witt1am Hues, F.R.S., Hon. Sec. to the 
Royal Aptronomical ocieby, yc x. 62%. w+ + aisle iw wise, wee oe as TL 140 
On some. further Results of Spectrum Analysis as applied to the 
Heavenly Bodies. By Witt1sam Hueerms, F.R.S., Hon. Sec. to the 
ioyal A stronbiniied! Someiy IT nis SS eee mie eee 152 
On Stellar Spectromotry. «By Padre Seccnr .......... <. cine oon 165° 
Report on the Physiological Action of the Methyl and allied Com- - 
pounds. By Brensamry W. Ricwarpsoy, M.A., M.D., F.R.S. ...... 170 
Report of the Edinburgh Committee on the Action of Merctiry on the 
Biliary Secretion. By J. Hueues Benyert, M.D., F.R.S.E., Chairman 
nd Meperten |e e.e.s/+,-.50e5>,*.*, 4,000.0 157 RR > ee a ist = 
Last Report on Dredging among the Shetland Isles. By J. Grwy 
ARN eres) LESS EOS 8 Song So 6 ROR EMAG SP Rates 232 
Shetland Final Dredging Report.—Part II. On the Crustacea, Tunicata, 
Polyzoa, Echinodermata, Actinozoa, Hydrozoa, and Porifera. By the 
Rev. Anremp Muriz Norman, M.A, .............00cc0ns oohiems 247 
Report on the Annelids dredged off the Shetland Islands by Mr. Gywn 
Jeffreys, 1867-68. By W. C. M‘Ivrosn, M.D., F.LS. .......... 336 
Report on the Shetland Foraminifera for 1868. By Epwarp Wattzr.. 340 
Addenda to the Rev. A. M. Norman’s Report .............cceeees 341 
Report on the Chemical Nature of Cast Iron.—Part I. Account of some 
Experiments made to obtain Iron free from Sulphur. By A. Mar- 
THIESSEN, F'.R.S., and 8. Prus SzczEPANOWSKI. ..........-.000020- 342 
Interim Report of the Committee on the Safety of Merchant Ships and 
their Passengers 4.000% vcttens ‘TRAV URE alee te tibiae 344 
