— CXIX — 



i. CAYLET. Mcmoir on the Itcsnlianl of a System of two Kqnalions. 



Oii the Symmetrie Functions of tltc Koots of certnin Sys- 



tema of two Equatioiis. 



Memoir on the Conditions for the Existencc of given Sys- 



tems of Equaliïies among the Roots of an Equation, 



Tables of the Stuimian Functions for Eqnalions of the 



Second, Third, Fourth, and Fifth Degrees. 

 c. GREviLLE WILLIAMS. On some of the Products of the Destnictive 



Distillation of Boghead Coal. 

 G. DOOLE. On the Coniparison of Transcendenis, wilh certain applica- 



tions to the Theory of Definiie Integrals. 

 w. noPKiNS. Experimental Researches on the Conductive Powers of 



varions Substances, with the application of the Results to the Fro- 



blera of Terreslrial Temperaiure. 

 E. iioDGKiNSON. Experimental Researches on the Strength of Pillers of 



Cast Iron, from various Parts of the Kingdom. 



Proceedings of the Eoyal Society of Londen. Vol. IX. N". 

 30 and 31. 8°. 



Memoirs of the Literary and Philosophical Society of Man- 

 chester. Londen 1788—1803. Vol. U. IV.— V. 2<l Series. 

 Londen 1842, 1856-1857. Vol. VI. XIIL XIV. 8". 



De Vol. II. IV. en V. der eerste Serie en Vol. VI der 2iie Serie zijn 

 ter aanvulling van ontbrekende deelen gezonden. 



Inhoud van 2^ Series Tol. XIII: 



it. A. SMiTiL Memoir of johs daltos, nnd Hislory of the Atoinic The- 

 ory up to hls time. 



Vol. XIV : 



w. STüKGEON. On LiglUning and Lightninjr Condnctors 



■ On some Pecuiiiuities of ilie Thunderbtorm which oc- 



cnrred in this neighbourhood on Tucsday, ilic lOih of July last. 

 w. FAiRiïAiRN. On ihe Coraparative Value of various kinds of Stonc, 



as Exhibited by their Powers of Resisting Compression. 

 j. p. JODLE. On ihe Fusion of Metals by Voltaic Electriciiy. 

 — A Short Account of ihc Life and Writings of the late 



Mr. TV. STDRGEON. 



p. CRACE CALVERT. On the Solubiiity of Sulphate of Baryta in Acid 

 Solutions. 



E. w. EiNNET. Additional Observations on the Fermian Beds of the 

 North-wesc of Enp;land. 



F. CRACE CALVERT and R. JOHNSON. The Chemical Chanpes wbich Pig 

 Iron undcrKOt'S during ils converüion into Wrought Iron. 



