PROCEEDINGS OF 



THE ROYAL SOCIETY. 



VOL. XXV. No. 172. 



CONTENTS. 



May 18, 1876 {continued). 



PA«jE 



VII. Note on a Simultaneous Disturbance of the Barometer and of the Mag- 

 netic Needle. By the Kev. S. J. Peeey, T.R.S 90 



V,\BRARy 



June 1, 1876. / * . Q. 



Election of Felloes 



June 15, 1876. X^"^ r - 



I! Report to the Hydrographer of the Admiralty on the Voyage of the * Chal- 

 lenger ' from the Falkland Islands to Monte Video, and a Position in lat. 

 32° 24' S., long. 13° 5' W. By Professor WrviLLE Thomson, F.R.S., 



Director of the Civihan Scientific Stafi" on board 92 



II. Preliminary Note on the Structure of the Stylasteridse, a group of Stony 

 Corals which, like the Milleporidse, are Hydroids, and not Anthozoans. 

 By H. N. MosELET, NaturaHst on board H.M.S. ' Challenger' .... 93 



III. On the Comparative Anatomy of the Auditory Ossicles of the Mammaha. 



By Alban H. a. DoEAN, F.R.C.S 101 



IV. On two new Vanadium Minerals. By H. E. Eoscoe, F.R.S. . , . . . 109 



V. The Action of Light on Selenium. By Professor W. Gr. Adams, F.R.S., and 



Mr. R, E. Day 113 



VI. On the Application of the Principle of Reciprocity to Acoustics. By Lord 



Rayleigh, F.R.S 118 



VII. On Phosphorus Pentafluoride. By T. E. TffOEPE, F.R.S., Professor 



of Chemistry in the Yorkshire College of Science 122 



VIII. On Supersaturated Saline Solutions. By J. Gr. Gteexfell, B.A., F.G-.S. 124 

 IX. On some Elementary Principles in Animal Mechanics. — No. VIII. The 

 Law of Fatigue. By the Rev. Samuel Hatjghton, M.D. (Dubl.), D.C.L, 



(Oxon.), F.R.S., FeUow of Trinity CoUege, Dubhn .131 



X. On Repulsion resulting from Radiation. Influence of the Residual Gras. 



— (Preliminary Notice.) By William Ceookes, F.R.S 136 



XI, Note on certain unusual Coagulation-appearances found in Mucus and 



other Albuminoid Fluids. By Chaeles Ceeighton, M.B., M.A. . . . 140 



[For continuation of Contents see ^th page of Wrap^er.'l 



