vi 



December 11, 1902. 

 SIR WILLIAM HUGGINS, K.C.B., O.M., President, in the Chair. 

 Mr. Hugh Frank Newall was admitted into the Society. 



A List of the Presents received was laid on the table, and thanks 

 ordered for them. 



The following Papers were read :— 



I. "On certain Properties of the Alloys of the Gold-Silver Series." 

 By the late Sir Wm. Roberts- Austen, K.C.B., F.R.S., and 

 Dr. T. Kirke Rose. 



II. " The Spectrum of 7 Cygni." By Sir Norman Lockyer, K.C.B., 

 F.R.S., and F. E. Baxandall. 



III. "Abnormal Changes in some Lines in the Spectrum of Lithium." 



By Hugh Ram age, B.A. Communicated by Professor 

 Liveing, F.R.S. 



IV. " Quaternions and Projective Geometry." By Professor C. J. 



Joly, F.T.C.D. Communicated by Sir Robert Ball, F.R.S. 



Y. "An Error in the Estimation of the Specific Gravity of the 

 Blood by Hammerschlag's Method, when employed in connec- 

 tion with Hydrometers." By Dr. A. G. Levy. Communi- 

 cated by Sir Victor Horsley, F.R.S. 



VI. " The Specific Heats of Metals and the Relation of Specific Heat 

 to Atomic Weight. Part II." By Professor W. A. Tilden, 

 F.R.S. 



The Society adjourned over the Christmas Recess to Thursday, 

 January 22, 1903. 



