CONTENTS. 



VOLUME XLVI. 



Page. 



Art. I. — Presidential Address. By J. H. Maiden, f.l.s., Govern- 

 ment Botanist and Director of the Botanic Gardens, Sydney. 1 



Art. II. — Some observations on the Bio-Chemical characteristics 

 of Bacilli of the Gaertner Paratyphoid-Hog Cholera Group. 

 By Burton Bradley, m.b., ch.m., m.r.c.s., l.r.c.p., d.p.h., 

 Assistant Microbiologist, Bureau of Microbiology, Honorary 

 Pathologist to St. Vincent's Hospital, Sydney. (From the 

 Laboratory of the Government Bureau of Microbiology.) ... 74 



Art. III. — On a new species of Prostanthera and its essential oil. 



By K.T.Baker, f.l.s., and H.G. Smith, r.c.s. [With Plate I.] 103 



Art. IV. — The differentiation phenomena of the Prospect Intrusion. 

 By H. Stanley Jevons, m.a., b.sc, H. I. Jensen, d.sc, 

 and C. A. Sussmilch, f.g.s. [With Plate II. ] ... ... Ill 



Art. V. — Notes on two Lightning Flashes. By F. H. Quaife, 



m.a., m.d 138 



Art. VI. — Notes on a model of New England and the associated 

 topographical forms. By E. C. Andrews, b.a., f.g.s. (By per- 

 mission of the Under-Secretary of Mines.) [With Plate III.} 143 



Art. VII. — Note on some Eecent Marine Erosion at Bondi. By 



C. A. Sussmilch, f.g.s. [With Plates IV- VI.'] 155 



Art. VIII. — Beach Formations at Botany Bay. By E. C. Andrews 



b.a., f.g.s. [With Plate VII.} 158 



Art. IX.— A New Mineral. By A. T. Ullmann 186 



Art. X, — On the Crystalline Deposit occurring in the timber of 

 the " Colonial Beech," Gmelina Leichhardtii. By Henry G. 

 Smith, f.cs. [With Plates VIII, IX.} 187 



Art. XL — Two New Grass Smuts. By Ewen MacKinnon, b.sc. 



[With Plates X - XIII,} ... 201 



Art, XII. — Note on the occurrence of the Genus Spirangiwm in the 

 Hawkesbury Series in New South Wales, By W. S. Dun. 

 [With Plate XIV.} 205 



Art. XIII. — Some Crystal Measurements of Chillagite. By Miss 



C. D. Smith, b.sc, and Leo A. Cotton, b.a., b.sc ... ... 207 



Abstract of Proceedings i,-xxi. 



Proceedings of the Geological Section ... ... ... xxii-xxiv. 



Title Page, Notices, Publications, Contents, (i. -v.) 



Officers for 1912-1913 ( v ii«) 



List of Members, &c (ix.) 



Index to Volume XLVI xxv. 



