PROCEEDINGS OF 

 THE EOYAL SOCIETY. 



vol. xx. No. 131. 



OJSTTENTS. 



December 7, 1871. 



PAGE 



I. On thfe Fossil Mammals of Australia. — Part YI. Genus Phascolomys, Geoflr. 



By Professor Owen, F.E.S 66 



II. On the Solvent Power of Liquid Cyanogen. By G. Goee, F.E.S 67 



III. On Fluoride of Silver.— Part III. By G. Goee, F.E.S 70 



December 21, 1871. 



I. Contributions to the History of Orcin. — No. II. Chlorine- and Bromine- 

 substitution Compounds of the Orcins. By John Stenhouse, LL.D., 

 F.E.S., &c 72 



EE. Note on Fucusol. By John SiENHorsE, LL.D., F.E.S 80 



III. On some recent Eesearches in Solar Physics, and a Law regulating the time 



of duration of the Sun-spot Period. By Wabeen De La Eee, D.C.L., 

 F.E.S., Baleotje Stewaet, F.E.S., and Benjamin Loewt, F.E.A.S. . . 82 



IV. Note on the Telescopic Appearance of Encke's Comet. By William Hug- 



gins, D.C.L., LL.D., F.E.S 87 



January 11, 1872. 



I. Experiments made to determine Surface-conductivity for Heat in Absolute 



Measure. By Donald M'Faelane 90 



II. The Myology of the Cheiroptera. By A. Macalistee, A.B., M.B.T.C.D., 



Professor of Zoology, University of Dublin 91 



III. Notice of further Eesearches on the Fossil Plants of the Coal-measures. By 



Dr. W. C. Williamson, F.E.S., in a Letter to Dr. Shaepet, Sec. E.S. . 95 



January 18, 1872. 



Investigations of the Currents in the Strait of Gibraltar, made in August 1871, 

 by Captain G. S. Naees, E.N., of H.M.S. ' Shearwater,' under Instructions 

 from Admiral Eichaejjs, F.E.S., Hydrographer of the Admiralty ... 97 



For continuation of Contents see 4th page of Wrapper. 



