CONTENTS, 
VOLUME XXXI. 
OFFICERS FOR 1897-98 ... ee 
List or Mempzrs, &c. 
Art. I—PresIpENt’s Aa DRESS. ae J. H. ite: F.L.S. 
Arr. II.—On the Crystalline Structure of Gold and Platinum 
Nuggets and Gold Ingots. By A. Liversidge, LL.D., F.R.8. 
(Plates i. — xvi. 
Arr. IIT.—A Contedbalion to the Study of Oxygen at Low Pree- 
sures. By R. Threlfall, m.a., and Flor 
e Martin 
Arr. IV.—Determination of the Orbit Macots of Comet f 1896 
(Perrine). By C. J. Merfield, F.B.A.s. 
ArT. V. Phe onset a Ascertaining the Minute dieains wiskoh 
occur in Mate when Stressed within the Elastic Limit. 
y W. H. comer . Sc., M. Am. Soc. C.E., M, Inst. C. E. 
ART. vL —The Theory of the retin iad Extensometer a Prof. 
Martens. By G. H. Knibbs, F 
Art. VII.—The ili or jatuee: cmon of the Mae 
rumbidgee Tri By R. H. Mathews, t.s. 
Arr. VIII. ee Distainad of Australian Tribes. By R. i. 
Mathews, 
Arr. IX.—On <n Suskesas ani Aeicingent Seadstlons of the 
nie Grey — ” Eucalyptus punctata, DC., and on a Product 
Camphor or Stearoptene in the “Sydney Peppermint,” 
Eucalyptus piperita,Sm. By R. T. Baker, F.1.s8., and Henry 
G. Smith, F 
Arr. XI. <Outiaipet of Pe Sea in Time of ‘Sesagh, By W. E. 
Abbott, Wingen ..,. 
Art. XII.—The Possibility of Soaring i in Horizontal Wind. By 
Lawrence Hargrave. (Plate xvii.) ... 
Arr. XIII.—On a Cordierite-bearing Rock toe “Broken Hill, 
By J. Collett Moulden, a.n.s.m., F.c.s. (Communicated by 
E. F. Pittmann, a.k.s.M.) 
Arr. XIV.—Icebergs in the Southern Oosan, No: By H.C. 
Russell, B.a., o.m.G., F.8.8. (Plate xviii.) ... 
Art. XV.—Aurora Australis. By H.C. Russell, B.s., 0.M.G., F.B.S. 
Arr. XVI.—On“ Grey Gum,” (Eucalyptus punctata, DC.) particu- 
larly in regard to its Essential Oil. By R.T. sp F.L.S., 
and H. G. Smith, F.c.s.... use aus a 
