IV 
CONTENTS. 
PAGE 
NO. 
XXXIX. Magnetic Quality in the most open Cubic Arrangement of 
Molecular Magnets. By Professor W. Peddie, . . 643 
{Issued separately October 12, 1908.) 
XL. The Variation of Young’s Modulus under an Electric Current. 
By Henry Walker, M.A., B.Sc. Part II. ( Com- 
municated by Professor J. G. MacGregor, F.R.S.), . 652 
{Issued separately , 1908.) 
The Papers published in this Part of the Proceedings may be 
had separately , on application to the Publishers , at the follow- 
ing prices : — 
No. XXXVI., 
No. XXXVII., 
No. XXXVIII., 
No. XXXIX., 
No. XL., . 
Price Is. 6d. 
8d. 
„ Is. Od. 
6d. 
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