CONTENTS. 
1 
PAGE 
A Contribution to our Knowledge of the x\natomy of Chamaeleons. 
By Paul A. Methuen, M.A. (Oxon.), and John Hewitt, B.A. 
(Cantab.). With Fourteen Text-figures 89 
Barometric Variability at Kimberley and elsewhere. By J. E. 
Sutton, Sc.D., F.E.S.S.A 105 
On an Experimental Modification of Van der Waal's Equation. By 
John P. Dalton, M.A., D.Sc. With Three Text-figures. . 123 
A New Mimicry Plant, Mesembriaiiihemum lapidijorync, Marl. By 
K. Marloth. With One Text-figure 137 
Note on a Theorem of Ph. Gilbert's regarding the Differentiation of 
a Special Jacobian. By Thomas Muie, LL.D. . . .139 
A Curious Mosquito, Gulex iheileri, Theobald. By G. A. H. 
Bedford, F.E.S. .143 
The Triple Stellar System J Virgo and 2 1757. By E. T. A. Innbs. 145 
Preliminary Note on Some Phreodriiidae from the Wellington 
Mountains, South Africa. By E. J. Goddard, B.A., D.Sc. . 147 
On the Significance of the Somitic Constitution, Body Form, and 
Genital Apertures in the Hirudinea, in reference to the 
Arthropoda. By E. J. Goddard, B.A., D.Sc. . . .148 
Note on Eosanes' Functions resembling Jacobians. By Thomas 
MuiR, LL.D. . • . . 157 
