CONTENTS. 



Page. 



Bragg, Prof. W. H., and Dr. J. P. V. Ma:, i en: An Experi- 

 mental Investigation of the I^iature of i^ 7 Rays. JSo. i. 1 



KoGEas, Dr. R. S. : Description of a New i:>pecies of Orchid 11 



iVlADSEN, Dr. J. P. v.: The Ionization Kemainxng in Gases 



after Jtiemoval from the Influence of the Ionizing Agent 12 



Bbagg, Prof. W. H., and Dr. J. P. V. Madsbn: An Experi- 

 mental Investigation of the Nature of the 7 Rays. No. ii. 35 



Turner, Dr. A. J . : New Australian Lepidoptera of the 



i^'amilies Noctuidse and Pyralidse 55 



Lower, O. B. : New Australian Lepidoptera. No. xxv. ... 110 



WooLNOUGH, Dr. W. G. : Notes on the Geology of the Mount 

 Lofty Ranges, Chiefly the Portion East of the Onka- 

 paringa River. Plates 1. and ii 121 



Baker, W. H. : Notes on Some Species of the Isopod Family 

 Sphseromidse, from the South Australian Coast. Plates 

 iii. to X 138 



Madsen, Dr. J. P. v.: Secondary 7 Radiation 133 



Verco, Dr. J. C. : Notes on South Australian Marin© Mol- 

 lusca, with Descriptions of New Species. Part viii. 

 Plates xi. to xiii. ^ ... 193 



Lea, a. M. : Descriptions of Australian Curculionidse, with 



Notes on previously-described Species. Part vi. ... 203 



Maiden, J. H. : A Contribution to the Botany of South 



Australia -. 262 



ZiETZ, A. : Description of a hitherto Undescribed Species of 



Shark from Investigator Strait c 287 



A Synopsis of the Fishes of South Australia. 



Part i 288 



A Synopsis of the Fishes of South Australia. 



Part ii 294 



Bragg, Prof. W. H. : On a Want of Symmetry shown by 



Secondary X-Rays. (Abstract.) 300 



Bragg, Prof. W. H., and J. L. Glasson: On a Want of 



Symmetry shown by Secondary X-Rays ... 301 



Lower, O. B. : Descriptions of New Australian Hesperiadse 311 



New Australian Tortricina 318 



Chapman, Prof. R. W. : The Strength of South Australian 



Timbers 326 



Verco, Dr. J. C. : Notes on South Australian Marine Mol- 



lusca, with Descriptions of New Species. Part ix. 



Plates xiv. to xviii 338 



Blackburn, Rev. T. : Further Notes an Australian Coleop- 



tera, with Descriptions of New Genera and Species. 



No. xxxviii. ... ... ... ... ... ..■ ... 362 



Abstract of Proceedings 387 



Annual Report ... 396 



Balance-sheet 397 



Endowment Fund 398 



Donations to the Library 399 



List of Fellows, Etc 412 



Appendices. 



Annual Report, ex., of Field Naturalists' Section ... .-.. 416 

 Twentieth Annual Report of the Native Fauna and Flora 



Protection Committee of the Field Naturalists' Section 418 



Annual Report, etc., of the Malacological Section ... ... 421 



Annual Report, etc., of the Microscopical Section ... ... 422 



Index 426 



