S'Ofa^i 
K 
PROCEEDINGS 
OF THE 
ROYAL SOCIETY OF EDINBURGH. 
SESSION 1905-6. 
No. IV.] VOL. XXVI. [Pp. 193-320. 
CONTENTS. 
PAGE 
A New Form of Harmonic Synthetiser. By J. R. Milne, 
B.Sc., Carnegie Research Fellow. (With Plate), . 207 
{Issued separately July 12, 1906.) 
Preliminary Note on the Conductivity of Concentrated 
Aqueous Solutions of Electrolytes. By Prof. J. 
Gibson, ...... 234 
{Issued separately August 29, 1906.) 
Recherches sur la Glauconie. Par les Drs Leon W. 
Collet et Gabriel W. Lee, assistants de Sir John 
Murray, K.C.B. Communique par Sir John Murray. 
(Avec 12 planches et 1 carte), . . . 238 
{Issued separately August 30, 1906.) 
[ Continued on page iv of Cover. 
EDINBURGH : 
Published by ROBERT GRANT & SON, 107 Princes Street, and 
WILLIAMS & NORGATE, 14 Henrietta Street, Covent Garden, London. 
MDCCCCVI. 
Price Seven Shillings. 
I S OCT 1 
Sb 
