Contents. 
viii 
PAGE 
On Radio-active Rain. By C. T. R. Wilson 428 
On an Attempt to detect the Ionisation of Solutions by the action of Light 
and Rontgen Rays. By J. A. Cunningham 431 
Note on the Dispersive Power of Running Water on Skeletons: with 
particular reference to the Skeletal Remains of Pithecanthropus 
erectus. By W. L. H. Duckworth 434 
Reflexion and transmission of Light by a Charged Metal Surface. By 
P. V. Bevan . 438 
The Histology of the Endosperm during Germination in Tamus com- 
munis and Galium Tricorne (With Plate V.). By W. Gardiner and 
A. W. Hill 445 
Regeneration in Sarnia ailanthus. By H. H. Brindley . . . 458 
Some Notes on Variation and Protandry in Flabellum rubrum, and 
Senescence in the same and other Corals. By J. Stanley Gardiner 463 
Note on the Influence of Ultra-Violet Radiation on the Discharge in a 
Vacuum Tube having a polished Zinc Electrode. By W. C. Baker . 472 
Note on a general numerical connection between the atomic weights. By 
J. H. Vincent 477 
On the variation with the wave-length of the double refraction in strained 
glass. By L. N. G. Filon 478 
The Coral Reefs of Zanzibar (With Map). By C. Crossland . . 493 
On Induced Radio-activity. By Prof. J. J. Thomson .... 504 
On the increase in the electrical conductivity of air produced by its 
passage through water. By Prof. J. J. Thomson .... 505 
Proceedings at the Meetings held during the Session 1901 — 1902 . . 507 
Periodical Publications received by the Society 515 
Index 527 
PLATES. 
PAGE 
Plate I. To illustrate Mr Barcroft’s paper 10 
Plate II. To illustrate Mr Skinner’s paper 36 
Plate III. To illustrate Mr Shipley’s paper ..... 213 
Plate IV. To illustrate Mr Menon’s paper 417 
Plate V. To illustrate Messrs Gardiner and Hill’s paper . . 455 
Plate VI. To illustrate Mr Crossland’s paper ..... 493 
