Art. XII.— The : 



By J. Burton Clbland, m.d., cilm., and T. Harvey John- 

 ston, m.a., b.sc. (From the Bureau of Microbiology, Sydney, 

 New South Wales.) 



Art. XIII.— An excursion to the Yosemite, (California), or studies 

 in the formation of Alpine cirques, "step*?/' and valley 

 "treads." By E. C. Andrews, b.a., Department of Mines, 



Art. XIV.— A note on the occurrence of Pentastomes in Australian 

 Cattle. By T. Harvey Johnston, m.a.. b.sc, and J. Burton 

 Cleland, m.d., ch.M. (From the Government Bureau of 

 Microbiology, Sydney, N.S.W.) 



Art. XV. — Notes on the condition of the atmosphere during the 

 recent contact of the Earth with the tail of Halley's Comet. 

 By H. G. A. Harding, a.s.t.c, Sydney Technical College. 

 (Communicated by W. J. Clunies Ross, b.sc.) 



Art. XVI.— On the interpretation of the precipitin reaction. By 

 D. A. Walsh, m.a., b.sc.. m . d ., m.r.c.p. Edin., and H. G. 

 Chapman, m.d., b.sc. (From the Laboratories of Physiology 

 and of Pathology in the University of Sydney.) 



Art. XVII.—" Stone Rolls "in the Bulli Coal Seam of N.S. Wales. 

 By W. G. Woolnough, d.s=„ f.g.s., Assistant Lecturer in 

 Geology and Mineralogy, University of Sydney 



A.BT. XVIII.— Studies in Statistical Representation: On the 

 nature and computation of the curve y = Ax m e nxP . By 



Statistician 



Art. XIX.— The anatomy of the head of the Green Turtle, Chelone 

 midas, Latr., Part I, The Skull. By H. Leighton Kesteven, 

 b,sc. Lecturer in Physiology and Biochemistry, Technical 

 College Sydney, (Communicated by C. Hedley, f.l.s.) 

 [With Plates XX -XXXIII.] 



Art. XX.— Some Rock Engravings of the Aborigines of New South 

 Wales. By R. H. Mathews, l.s 



Art. XXL— The Haematozoa of Australian Fish, No. I. By T. 

 Harvey Johnston, m.a., is., and J. Burton Cleland, m.d., 

 ch.M. (From the Government Bureau of Microbiology, 

 Sydney, New South Wales) 



Art. XXII.— Notes on the suitability of Tropical Australia for the 

 White Races. By Dr. T. V. Danes. (Communicated by 

 Professor David, b.a., P.R.s., c.m.g.) 



Art. XXIII. —Geographical Unity of Eastern Australia in Late 

 and Post Tertiary Time, with applications to Biological 

 Problems. By E. C. Andrews, b.a., Department of Mines, 



