IV 
CONTENTS. 
NO. PAGE 
XXXII. Observations of the Earth-air Electric Current and the 
Atmospheric Potential Gradient at Edinburgh. By 
G. A. Carse, D.Sc., and D. MacOwan, . . . 460 
( Issued separately July 28, 1910.) 
XXXIII. On Continuous, and Stable, Isothermal Change of State. 
By Professor W. Peddle, .... 466 
( Issued separately July 28, 1910.) 
XXXIY. The Significance of the Correlation Coefficient when ap- 
plied to Mendelian Distributions. By John Brownlee, 
M.D., D.Sc., . . . . . .473 
{Issued separately August 1, 1910.) 
XXXV. The Morphology of the Manus in Platanista gangetica, 
the Dolphin of the Ganges. By Sir Wm. Turner, 
K.C.B., D.C.L., F.R.S., President of the Society. (With 
Four Plates), . . . . . . 508 
( Issued separately August 1, 1910.) 
XXX YI. Specific Yolume of Solutions of Tetra-propyl-ammonium 
Chloride. By J. W. M‘David, B.Sc., Carnegie Research 
Scholar. Communicated by Professor James Walker, . 515 
{Issued separately , 1910.) 
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