Wi CONTENTS OF VOL. V. — FOURTH SERIES. 



*^*^ NUMBER XXXIII.— MAY. 



Page 

 Dr. Gladstone on the Relations between the Atomic Weights 



of analogous Elements 318 



Sir W. R. Hamilton on Continued Fractions in Quaternions 



(continued) 321 



Dr. Latham on the Subjectivity of certain Classes in Ethno- '' 



logy 826 



Mr. W. Davy on a New Test for Nitric Acid and the Nitrates. . 330 

 Dr. Adamson on u proposed Test of the Necessity of Indirect 

 Proof in Geometrical Demonstrations, with Remarks on Me- 

 thods of Demonstration (continued) 332 



Mr. T. J. Herapath, Were the Ancient Egyptians acquainted 



with Nitric Acid ? 339 



Mr. R. Adie on Ground Ice found in the Beds of Running 



Streams 340 



Mr. J. Napier on Copper Smelting. — Fusing calcined coarse 



Metal (continued) 345 



Mr. G. B. Jerrard on a Method of Transforming Equations by 



means of Symmetric Functions 354 



On the Intensity and Quantity of Electric Currents 363 



Mr. J. J. Sylvester, A Proof that all the Invariants to a cubic 

 Ternary Form are Rational Functions of Aronhold's Inva- 

 riants and of a cognate theorem for biquadratic Binary Forms 



(continued) 367 



Mr. H. J. Brooke on some supposed Crystals of Trona. With 



an Analysis by Mr. Allan Dick 373 



Notices respecting New Books : — Mr. T. Tate on the Princi- 

 ples of Mechanical Philosophy applied to Industrial Mechanics. 374 



Proceedings of the Royal Society , . . 374 



Royal Institution 381 



On the Chemical Combinationsresultingfrom the con tactof Solids 



with Liquids in virtue of feeble Actions, by M. Becquerel . . 384 

 On the Temperature produced by the Combustion of Carbon in 



the Air, by H. Deville 387 



Note on the Reproduction of Engravings andDrawings by means 



of the Vapour of Iodine, by M. Ni^pce de Saint Victor .... 388 

 Remarks on the Structural Conditions of Iron,byT.R. v.Fuchs 389 



Meteorological Observations for March 1853 391 



Table 392 



NUMBER XXXIV.— JUNE. 



Prof. Thomson on Transient Electric Currents 393 



Dr. Adamson on a proposed Test of the Necessity of Indirect 

 Proof in Geometrical Demonstrations, with Remarks on 



Methods of Demonstration (concluded). . * 405 



Dr. Schunck on Rubian and its Products of Decomposition. 

 Part II 410 



