On the Plasticity of Ice, as manifested in Glaciers. By James 

 Thomson, A.M, C.E page 455 



On the part which the Silicates of the Alkalies may play in the 

 Metamorphism of Rocks. By T. Sterry Hunt, Esq 458 



On the Comparison of Transcendents, with certain applications to 

 the Theory of Definite Integrals. By George Boole, Esq. . . .461 



On the Organization of the Brachiopoda. By Albany Hancock, Esq. 463 

 On the Placenta of the Elephant. By Prof. Eichard Owen, F.R.S. 471 



The Croonian Lecture. On the Cause of the Rhythmic Motion of 

 the Heart. By James Paget, Esq., F.R.S 473 



On a new mode of forming Triethylamine. By A. W. Hofmann, 

 LL.D., F.R.S 489 



Contribution towards the History of Thialdine. By A. W. Hofmann, 

 LL.D., F.R.S 491 



On the Action of Sulphuric Acid upon Anisic and Salicylic Acids. 

 By A. W. Hofmann, LL.D., F.R.S 494 



On the Separation of Iodine, Bromine, and Chloruie, and the com- 

 parative degree of Affinity of these Elements for Silver; with 

 some Analyses of their Combinations with that Metal, occurring 

 in Chili. By Frederick Field, Esq 496 



Note on the Densitv of Ozone. By Thomas Andrews, M.D., F.R.S., 

 and P. G. Tait, M.A 498 



Contributions towards the History of the Phosphorus-, Arsenic-, 

 and Antimony-Bases. By A. W. Hofmann, Ph.D., LL.D., F.R.S. 500 



On a New Series of Compounds derived from Ammonia and its Ana- 

 logues. By Edward Frankland, Ph.D., F.R.S 502 



On a Class of Dynamical Problems. By Arthur Cayley, Esq., F.R.S. 506 



Remarks on a New Class of Alcohols. (Second Note.) By A. W. 

 Hofmann, LL.D., F.R.S., and Auguste Cahours, F.C.S 511 



Photo-chemical Researches. By Prof. Bunsen and Henry E. Roscoe, 

 B. A., Ph.D. (Third Communication.) The Optical and Chemical 

 Extinction of the Chemical Rays 516 



On the Causes and Phenomena of the Repulsion of Water from the 

 Feathers of Water-Fowl and the Leaves of Plants. By George 

 Buist, D.C.L., F.R.S 520 



Researches on the Phosphorus-Bases. By A. W. Hofmann, LL.D., 

 F.R.S., and Auguste Cahours, F.C.S 523 



Report of Proceedings of the Astronomical Expedition to Teneriffe, 

 in 1857. By Prof. C. Piazzi Smyth 528 



Account of the Construction of the New National Standard of 

 Length, and of its principal Copies. By G. B. Airy, Esq., F.R.S., 

 Astronomer Royal 530 



On the existence of the Decidua around the Ovum in Fallopian-Tube 

 Conception, &c. By Robert Lee, M.D., F.R.S 534 



