CONTENTS 



SECTION B.-BTOL()GICAL, GEOLOGICAL, AND CHEMICAL 



SCIENCE. 



Algar (Joseph), M.Sc: — 



Diketones derived from Diacetoresorcinol-Dimethylether, . . 86 



Unsaturated Ketones derived from Diaeeto-oreinol, . . . 109 



Carpenter (G. H.), M.So. : — 



Tlie Apterygota of the Seychelles. (Plates I-XVIII), ... 1 



Kew(H.W.):— 



A Synopsis of the False- Scorpions of Britain and Ireland : Supple- 

 ment, ........-■• 71 



■O'RioRDAN (W. M.), M.Sc. :— 

 See under Ryan (H.). 



Ryan (H.), D.Sc, and W. M. O'Riordan, M.Sc. :— 



On the tinctorial constituents of some Lichens which are used as 



Dyes in Ireland, .......•• 91 



Ryan (H.), D.Sc, and Phyllis Ryan, B.Sc. :— 



On the Condensation of Aldehydes with Ketones, iii — Benzal- 



dehyde with Methyl-Isopropyl-Ketone, ..... 105 



Ryan (Phyllis), B.Sc. :— 



See under Ryan (H.). 



