Notices respecting New Books. GO 



F.R.S. V.P.R.I. — III. On the Development of exponential Func- 

 tions; together with several new Theorems relating to finite 

 Diiferences. By John Frederick W. Herschel, Esq. F.R.S. — 

 IV. On new Properties of Heat, as exhibited in its Propagation 

 along Plates of Glass. By David Brewster, LL.D. F.R.S. Lond. 

 and Edin. In a Letter addressed to the Right Hon. Sir Joseph 

 Banks, Bart. G.C.B. P.R.S.— V. Further Experiments on the 

 Combustion of ex])lo3ive Mixtures confined by Wire-gauze, with 

 some Observations on Flame. By Sir H. Davy, LL.D. F.R.S. 

 V.P.R.I. — VI. Some Observations and Experiments made on 

 the Torpedo of the Cape of Good Hope in the Year 1812. By 

 John T.Todd, late Surgeon of His Majesty's Ship Lion. Com- 

 municated by Sir Everard, Home, Bart. V.P.R.S. — VII. Direct 

 and expeditious Methods of calculating the excentric from the 

 mean Anomaly of a Planet. By the Rev. Abram Robertson, 

 D.D. F.R.S. Savilian Professor of Astronomy in the University 

 of Oxford, and Radcliffian Oiiserver. Communicated by the 

 Right Hon. Sir Joseph Banks, Bart. G.C.B. P.R.S.— VIIL De- 

 monstrations of the late Dr. Maskelyne's Formulaj for finding the 

 Longitude and Latitude of a celestial Object from its Right 

 Ascension and Declination ; and for finding its Right Ascension 

 and Declination from its Longitude and Latitude, the Obliquity 

 of the Ecliptic being given in both Cases. By the Rev. Abram 

 Robertson, D.D. F.R.S. Savilian Professor of Astronomy in the. 

 Universitv of Oxford, and Radcliffian Observer. Communicated 

 by the Right Hon. Sir Joseph Banks, Bart. G.C.B. P.R.S.— 

 IX. Some Account of the Feet of those Animals whose pro- 

 gressive Motion can be carried on in opposition to Gravity. By 

 Sir Everard Home, Bart. V.P.R.S. — X. On the Communication 

 of the Structure of duublv refracting Crystals to Glass, Muriate 

 of Soda, Fluor Spar, and other Substances, by mechanical Com- 

 pression and Dilatation. ]3y David Brewster, LL.D. F.R.S. 

 Lond. and f^din. In a Letter addressed to the Right Hon. Sir 

 Joseph Banks, Bart. (i.C.B. P.R.S, 



Mr. William Pliillips will puljlish in the course of this mouth, 

 a new edition of ii's Outlines of Mineralogy and Geology, revised 

 and improved. This elementary book is dosigned chiefly for the 

 Use of young persons. To this edition will be added, some ac- 

 count of tlie g-ology of England and Wales, together with a 

 coloured map and section of the strata ; which is intended also 

 to be published separately, for the purchasers of the first edition. 



The Third Volume of the Transactions of the Geological So- 

 ciety will be published in the course of this month. It will be 

 illustrated by a large number of highly-finished plates, chiefly 

 coloured. E .{ XIX. Pro- 



