5-06.4IN 
CONTENTS. 
The date of Reading will be found prefixed to each Paper, The date of Publication, as inserted in the following 
Table of the Contents of this Volume, is that at which the Paper was ready for distribution. 
BROWN, W. 
The Densities and Specific Heats of some Alloys of Iron, 
[Published August 23, 1907. | 
CONWAY, ARTHUR W. 
Hlectro-Magnetic Mass, 
[ Published March 28, 1907. | 
HACKETT, F. E. 
The Secondary Radiation excited by y Rays, 
[ Published January 12, 1909. | 
—— (See McCLELLAND and HACKETT.) 
HARTLEY, WALTER NOEL. 
An Investigation of the Connexion between Band and Line Spectra of the same 
Metallic Elements, 
[ Published October 1, 1908.]} 
LAVIS, H. J. JOHNSTON. 
The Eruption of Vesuvius in April, 1906, 
[ Published January 11, 1909.) 
McCLELLAND, J. A. 
On Secondary Radiation (Part II.), and Atomic Structure, 
[Published May 17, 1905. 
The Energy of Secondary Radiation, 
[Published February 6, 1906. | 
PAGE 
59 
51 
201 
85 
139 
9 
