PROCEEDINGS OF 

 THE ROYAL SOCIETY. 



vol. xxvlti. ^"TOr^l^. 



CONTENTS. Wfg 



April 3, 1879. 



PAGE 



I. On the Thermal Conductivity of Water. By J. T. Bottomley, Lecturer 

 in Natural Philosophy and Demonstrator in Experimental Physics in the 

 L T niversity of Glasgow 462 



II. The Preparation in a State of Purity of the G-roup of Metals known as 

 the Platinum Series, and Notes upon the Manufacture of Iridio-Platinum. 

 By G-eoege Matthey .... 463 



III. On the Reversal of the Lines of Metallic Vapours. No. VI. By Gr. D. 

 Liyeixg, M.A., Professor of Chemistry, and J. Dewae, M.A., F.R.S., 

 Jacksonian Professor, IJniTersity of Cambridge ..... 471 



IV. Note of the unknown Chromospheric Substance of Young. By G-. D. 

 LrvEiXG, M.A., Professor of Chemistry, and J. Dewae, M.A., F.R.S., 

 Jacksonian Professor, University of Cambridge ..... 475 



V. Contributions to Molecular Physics in High Vacua. By William 

 Ceookes, F.R.S 477 



VI. Note on a Direct Vision Spectroscope after Thollon's Plan, adapted to 

 Laboratory use, and capable of giving exact Measurements. By. Gr. D. 

 Liveing, M.A., Professor of Chemistry, and J. Dewae, M.A., F.E.S., 

 Jacksorian Professor, University of Cambridge 482 



April 24, 1879. 



I. On the nature of the Fur on the Tongue. By Heney Teentham 

 Btjtli*, F.R.C.S. (Plates 10-13) 484 



II. Note on the Supplementary Forces concerned in the Abdominal Circula- 

 tion in Man. By J. Beaxton Hicks, M.D., F.R.S. . . . .489 



III. Note on the Auxiliary Forces concerned in the Circulation of the Preg- 

 nant Uterus and its Contents in Woman. By J. Beaxton Hicks, M.D., 

 F.R.S., F.L.S., &c .494 



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