CONTENTS. 
VOL. XVIL 
The Effects of Hypertonic Solutions upon the Eggs of Echinus. By 
J. Gray. (Communicated by Mr F. A. Ports) ; : 
Preliminary Note on the Inheritance of Self-sterility in Reseda odorata. 
By R. H. Compton : : : 
On the Anthropometric data collected by Professor J. Stanley Gardiner, 
F.RS., in the Maldive Islands and Minikoi. By W. L. H. 
DUCKWORTH : : : : : : : 
Notes on the volatilization of certain binary alloys in high vacua. By 
A. J. BERRY 
On Pulsus alternans. By GrorGE RatpH Minzs. (Plate I). 
The Diffraction of Short Electromagnetic Waves by a Crystal. By 
W. L. Brace. (Communicated by Professor Sir J. J, Tomson.) 
(Plate II.) (Two figs. in Text) 
The Meres of Breckland. By J. E. Marr 
Note on a Remarkable Instance of Complete Rock-disintegration by 
Weathering. By F. H. Hatcu : : : : . 
The Variation of Magnetic Susceptibility with Temperature. Part II. 
On Aqueous Solutions. By A. E. Oxtny. (Six figs. in Text) 
Some Experiments on the Electrical Discharge in Helium and Neon. 
By Hersert Epmeston Watson. (Communicated by Professor 
Sir J. J. THomson.) (Two figs. in Text) 
Some Diophantine Impossibilities. By H. C. PocKLineTon . 
On the earlier Mesozoic Floras of New Zealand. By EK. A. NEWELL ARBER 
The Mineral Composition of some Cambridgeshire Sands and Gravels. 
By R. H. Rastatr . : ‘ : , 
Note on the Réntgen radiation oe cathode particles traversing a gas. 
By R. Wuippineton. (One fig. in Text) 
PAGE 
108 
122 
132 
144 
