vl CONTENTS OF VOL. XIX.— FOURTH SERIES. 
Page 
Proceedings of the Royal Society :— 
Dr. Hofmann on Phosphammonium Compounds........ 306 
Messrs. A. Geuther and R. Cartmell on the Behaviour of 
the Aldehydes with Acids . se 0 a ante ee 
Dr. Babington on Spontaneous Evaporation BISGING cacteners 314 
Proceedings of the Geological Society :— 
Mr. i Barrett on some Cretaceous Rocks in Jamaica. . 318 
Mr. R. Godwin-Austen on the Occurrence of a mass taf 
Coal in the Chalk of Kent, and on some Fossils from 
the Grey Chalk near Guildford . 318 
Mr. 8S. V. Wood on the Probable Events evil succeeded 
the Close of the Cretaceous Period ..............-- 319 
Proceedings of the Royal Institution :— 
Dr. Faraday on Lighthouse Ilumination—the ElectricLight. 320 
On Boracic Acid in the Sea-water on the Coast of California, by 
Drs Veatchan. .\s3 323 
On a new kind of Sound- figures formed. by Drops of a | Liquid, 
Hep Ta ielde? Ssh a karen: wtp Tea se alter ane dahon che ee 324 
NUMBER CXXVIII.—MAY. 
Prof. Miller’s Crystallographic Notices .... 325 
Mr. F. A. Abel on the Composition of Water obtained from the 
Coal-strata, Bradford Moor, Yorkshire.................. 330 
Mr. J. Cockle’s Note on the Remarks of Mr. Jerrard........ 331 
Mr. W. K. Sullivan on some Prismatic Forms of Calcite from 
Luganure, County of Wicklow . of 333 
Mr. J. J. Waterston on certain Inductions with respect to ‘the 
Heat engendered by the possible Fall of a Meteor into the 
Sun; and on a mode of deducing the absolute Temperature 
of the Solar Surface from Thermometric Observation...... 338 
Prof, Jellett’s Remarks on the Controversy between Arch- 
deacon Pratt and Professor Haughton .................. 343 
Mr. W.S. B. Woolhouse on the Deposit of Submarine Cables. 345 
Mr. M. Ponton on certain Laws of Chromatic mies (con- 
CT | a ee .... 3864 
Dr. Atkinson’s Chemical Notices from Foreign Journals. Rapp iel0, 
Proceedings of the Royal Society :— 
Prof. J. Thomson on Recent Theories and Experiments 
regarding Ice at or near its Melting-point. . 391 
Prof. Donkin on the Analytical Theory of the Attraction 
of Solids bounded by Surfaces of a Class dae «8 the 
Ellipsoid .... 4 397 
Proceedings of the Geological Society :— — 
Mr. T. Codrington on the ahah Glacial oe of some 
Norwegian Lakes ...... 399 
