Vll 



the Standard Meteorological Instruments for the Kew Observa- 

 tory. By Mr. John Welsh page \78 



On the Graduation of the Thermometers supplied from the Kew Ob- 

 servatory for the use of the Arctic Searching Expedition under Sir 

 Edward Belcher. By Mr. John Welsh 183 



The Reply of the President and Coimcil to a Letter addressed to them 

 by the Secretary of State for Foreign Affairs, on the subject of the 

 cooperation of different Nations in Meteorological Observations . . 188 



Second Appendix to a paper entitled " Discovery that the Veins of the 

 Bat's Wing (which are furnished with valves) are endowed with 

 rythmical contractility." By T. Wharton Jones, Esq., F.R.S., &c. 192 



Upon the Morphology of the Cephalous Mollusca, as illustrated by the 

 anatomy of certain Heteropoda and Pteropoda. By Thomas H. 

 Huxley, Esq., F.R.S 192 



On the Change of Refrangibility of Light. By George G. Stokes, 

 Esq., M.A., F.R.S., Lucasian Professor of Mathematics, Cam- 

 bridge 195 



Analytical Researches connected with Steiner's Extension of Malfatti's 

 Problem. By Arthur Cayley, M.A., Fellow of Trinity College, 

 Cambridge 200 



On the Tides, Bed and Coasts of the North Sea or German Ocean. 

 By John Murray, Esq 201 



On the Structure and Development of Bone. By John Tomes, F.R.S., 

 Sm^geon Dentist to the Middlesex Hospital, and Campbell De Mor- 

 gan, Surgeon to the Middlesex Hospital 203 



On Rubian and its Products of Decomposition. Part IL Action of 

 . Alkalies and Alkaline Earths on Rubian. By Edward Schunck, Esq., 

 F.R.S. ■ 208 



Experiments towards the construction of new forms of Instruments 

 for the Correction of Compass Errors due to the presence of iron in 

 ships ; with investigations on the nature of the attraction of Iron on 

 the poles of Magnets. By Julius Roberts, Esq., Lieut. R.M. Artillery 212 



On the Impregnation of the Ovum in the Amphibia (Second Series re- 

 vised), and on the direct agency of the Spermatozoon. By George 

 Newport, F.R.S., F.L.S., &c 214 



On the Functions of the Membrana Tympani, the Ossicles and Muscles 

 of the Tympanum, and of the Eustachian Tube in the Human Ear, 

 with an account of the Muscles of the Eustachian Tube and their ac- 

 tion in different classes of Animals. By Joseph Toynbee, Esq., 

 F.R.S., &c 2ir 



An Experimental Inquiry undertaken with the view of ascertaining 

 whether any, and what signs of current Force are manifested during 

 the organic process of Secretion in living Animals (continued). By 

 H. F. Baxter, Esq 221 



On a new Series of Organic Bodies containing Metals. B}^ Dr. E. 

 Frankland, Professor of Chemistry, Owens College, Manchester . . 222 



On the Dentate Body of the Cerebellum. By WilHam Brinton, M.D. 225 



Proof of a sensible difference between the Mercurial and Air-Thermo- 

 meters from 0° to 100° C. By J. J. Waterston, Esq 225 



An Experimental Inquiry undertaken with the view of ascertaining 



