TO CORRESPONDENTS. 



Mr. (i. Logy's Remarks on Mr.BoAz's Paper on the Structure of the Earth; and 

 Mr. J. Elliott on Phenomena observed in the Manufecture of Oil Gas, have been 

 received. 



The letter of Glosterian on Rain Gauges will appear in our next ; and the 

 continuation of Mr. Upington on Short-hand Writing. 



We beg the favour of our friends who furnish the materials for our Meteorolo- 

 gical Joui-nal to send their observations up to the 25th of each month inclusive. 



This day is published, in 3 volumes 8vo, S6s. in boards, 



■JYIEDICAL JURISPRUDENCE: comprehending Medical, Che- 

 ■i-^-i- niical, Anatomical, and Surgical Investigations, applicable to Fo- 

 rensic Practice; for the Instruction and Guidance of Coroners, Magi- 

 strates, Barristers, and Medical Witnesses. With a copious Appendix 

 of Statutes, Cases, and Decisions. 



By JOHN AYRTON PARIS, M.D. RR S. F.L.S. 

 Fellow of the Royal College of Physicians, &c. &c. &c. 



And JOHN S. M. FONBLANQUE, Esq. 

 Barrister at Law. 

 London, Printed and Published by W^illiam Phillips, George Yard Lom- 

 bard Street. Sold also by Underwood, and by Highley, Fleet Street ; 

 Taits, Edinburgh ; and Milliken, Dublin. 



In the present month (May) will be published in 1 vol, small 8vo. 

 The 3rd Edition Enlarged, and Illustrated by upwards of 400 Figures of 

 the Crystalline Forms of Minerals, Engraved, Coloured, and accom- 

 panied by the Measurements of their Planes, chiefly taken by means of 

 the Reflective Goniometer, of 

 N ELEMENTARY INTRODUCTION TO MINERALOGY. 

 -^ By WILLIAM PHILLIPS, F.L.S. M.G.S.L. and C. 



Hon. Member of the Cambridge and Yorkshire Philosophical Societies. 



A 



At the same time will be published, in 1 vol. small 8vo, 



A FAMILIAR INTRODUCTION to CRYSTALLOGRAPHY, 

 including an Explanation of the Principle and Use of the Common and 

 Reflective Goniometers. Followed by an Appendix, containing the 

 Methods of applying mathematical Calculation to the Determination of 

 crystalline Forms : and Rules for drawing the Figures of Crystals ; with a 

 List of the primary Forms of Minerals, and some Observations on minera- 

 logical Arrangement. Illustrated by nearly 400 wood cuts, or diagrams. 



By HENRY JAMES BROOKE, F.R S. F.L.S. &c. 



The .system of notation used by Mr. Brooke, to designate the secon- 

 dary planes of Crystals, will be adopted by Mr, Phillips in the 3rd edition 

 of his Mineralogy, thus rendering the two works illustrative of each other. 



