Vlll 



On the Magnetism of Iron Ships, and its accordance with Theory, 

 as determined externally, in recent Experiments. By the Rev. W. 

 Scoresby, D.D., F.R.S P a ff e 431 



Extract of a Letter from Professor Langberg of Christiania to Co- 

 lonel Sabine, dated June 10, 1855 434 



Anatomical Notices. By Professor Andrew Retzius, of Stockholm ... 437 



On the Effect of Local Attraction upon the Plumb-line at stations on 

 the English Arc of the Meridian, between Dunnose and Burleigh 

 Moor ; and a Method of computing its Amount. By the Vene- 

 rable Archdeacon Pratt 440 



Contributions to the history of Aniline, Azobenzole and Benzidine. 

 ByA.W. Hofmann, Ph.D., F.R.S 444 



On the Formation and some of the Properties of Cymidine, the Organic 

 Base of the Cymol Series. By the Rev. John Barlow, F.R.S 446 



Letter from Dr. Herapath to Professor Stokes, On the Compounds 

 of Iodine and Strychnine 447 



On the Existence of a Magnetic Medium. By T. A. Hirst, Esq 448 



On the ultimate Arrangement of the Biliary Ducts, and on some other 

 points in the Anatomy of the -Liver of Vertebrate Animals. By 

 Lionel S. Beale, M.B 454 



Experimental Researches on the Movement of Atmospheric Air in 

 Tubes. By W. D. Chowne, M.D 466 



On the Constitution and Properties of Ozone. By Thomas Andrews, 

 M.D., F.R.S 475 



On Rubian and its Products of Decomposition. Part III. By Ed- 

 ward Schunck, Esq., F.R.S 477 



On the Enumeration of a;-edra having an (x l)-gonal Face, and all 

 their Summits Triedral. By the Rev. Thomas P. Kirkman, A.M. 482 



Notes on British Foraminifera. By J. Gwyn Jeffreys, Esq., F.R.S. 485 



Preliminary Research on the Magnetism developed in Iron Bars by 

 Electric Currents. By J. P. Joule, Esq., F.R.S 488 



Discussion of the observed Deviations of the Compass in several 

 Ships, Wood-built and Iron-built ; with General Tables for facili- 

 tating the examination of Compass-deviations. By G. B. Airy, 

 Esq., F.R.S., Astronomer Royal 491 



On Axes of Elasticity and Crystalline Forms. By W. J. Macquorn 

 Rankine, Esq., C.E., F.R.SS. L. & E. &c .'. 495 



Report of a Committee appointed by the Council to examine the 

 Calculating Machine of M. Scheutz 499 



Report made to the President and Council of the Royal Society, of 

 Experiments on the Friction of Discs revolving in Water. By James 

 Thomson, Esq., C.E., Belfast 509 



Account of the appropriation of the sum of ^5000, placed by Her 

 Majesty's Government, in five annual sums of ^1000 each, in the 

 years 1850 to 1854 inclusive, at the disposal of the Royal Society, 

 to be employed in aiding the promotion of Science in the United 

 Kingdom 512 



Experimental Researches in Electricity. Thirtieth Series. By Mi- 

 chael Faraday, D.C.L., F.R.S. &c 523 



