PROCEEDINGS 
OF THE 
ROYAL SOCIETY OF EDINBURGH. 
SESSION 1909-10. 
Part V.] 
VOL. XXX. [Pp. 375-438. 
CONTENTS. 
NO. PAGE 
XXII. Borel’s Integral and g-Series. By Rev. F. H. Jackson, 
M.A., . 378 
XXIII. Proposals for an Anemometer and a Portable Barometer. 
By J. T. Morrison, M.A., B.Sc., Professor of Applied 
Mathematics, Victoria College, Stellenbosch, Cape 
Colony, . . . . . . 386 
( Issued separately May 7, 1910.) 
XXIV. The Theory of Bigradients in the Historical Order of 
Development up to 1860. By Thomas Muir, LL.D., . 396 
( Issued separately May 7, 1910.) 
XXV. The Theory of Persymmetric Determinants in the Historical 
Order of Development up to 1860. By Thomas Muir, 
LL.D., . . 40r 
( Issued separately June 16, 1910.) 
[ Continued on page ~ ■ p $ tf tj - 
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