CONTENTS. 
PAGE 
Colour and Chemical Constitution. Part II : The Spectra of the 
Mixed Phthaleins and of the Sulphone-phthaleins. By James 
MoiR, M.A., D.Sc, F.I.C. . ... . . .111 
Note on the genus Terfezia ; A Truffle from the Kalahari. By I. B. 
Pole Evans, M.A., B.Sc, F.L.S. (With Plate VII) . . . 117 
Note on the Abnormal Development of the Genital Organs of Jasus 
lalandii (Milne Edw.). By W. von Bondb, B.A. (With two 
Text-figs.) . . . . ....... 119 
Colour and Chemical Constitution. Part III. — Derivatives of the 
Unknown Ortho-paraphenolphthalein. By James Moib, M.A. 
D.Sc, E.I.C. . . . . . ^ . . . ■ 123 
Spectrum- Phenomena in the Chromium Compounds. Being Part IV 
of the Spectrum of the Euby and Emerald. By James Moir, 
M.A., D.Sc, F.I.C. ... . . . > . . 129 
On Bana fuscigula and B. angolensis. By G. A. Boulenger, LL.D,, 
D.Sc., RE.S. . . . . . . . . . . 131 
Henry Harold Welch Pearson, F.E.S. By I. B. Pole Evans, M.A., 
B.Sc, E.L.S. . . . . . . . . . . 139 
