IV. 
LIST OF PLATES — continued. 
Mr. Bow ley's Paper — 
Plate IX. — Structural formula for alunite 
Dr. Simpson's Paper — 
Plate X. — Diagram illustrating the physical conditions con- 
ducive to the formation of each member of the 
Prochlorite Almandine Series 
Mr. Herbert's Papers — 
Plate XL — Fusanus acuminatus. The Quandong 
XII. — Roots of Acacia acuminata attacked by haustoria 
XIII. — Xanthorrhoea Reflexa 
Pro fessor N % cho IV s P a per — 
Plate XIV. Figures illustrating a new species of Naidiform 
worm (Dero roseola) 
Mr. Shelton's Paper — 
Plate 
J 9 
XV.— T.S. Leaf 
T.S. 
XVI.— T.S. 
XVII.— T.S. 
of Banksia Attenuata 
Drvandra Floribund a 
Leaf of Ammophila Arundinacea 
Xanthorrhoea Preissii 
LIST OF OFFICERS, 1220-1921. 
Patron : His Majesty the King. 
Vice Patron: Sir Francis Alexander Newdegate., K.C.M.G. 
President : E. S. Simpson, D.Sc., B.E., F.C.S. 
Vice Presidents : 0. E. Lane-Poole ; F. E. Allum. 
Past Presidents : 
1914- 15 — W. J. Dakin, D.Sc., F.L.S., F.Z.S. 
1915- 16 — A. Gib b-Mait land, F.G.S. 
^91 (3—17 — A. D. Boss, M.A., D.Sc., F.B.S.E., F.R.A.Sc. 
1Q]7_18 — A. Montgomery, M.A., F.G.S. 
1918-19 — VV. I. Hancock, M. Tnst., C.E., M.I.E.E. 
1919_20 — G. L. Sutton. 
Members of i'o'mcil : E. deC. Clarke, M.A. ; 
Lotz, F.B.C.S., D.P.H., L.B.C.P. : W. A. 
Honorary Secretary : D. A. Herbert, M.Sc. 
Honorary Treasurer : Miss Enid Allum. 
Honorary Librarian : W. E. Shelton, B.Sc. 
Honorary Auditors : A. B. Galbraith ; F. B. 
Miss M. E. Creeth ; H. J. 
Saw ; W. H. Shields, B.Sc. 
Creeth. 
Postal Address and place of meeting — 
The Museum, 
Beaufort Street, Perth, W.A. 
