6 
LIST OF ILLUSTRATIONS. 
TO FACE PAGE 
Plate X. Fig. 13. Ice-scratched Granite Boulder 
embedded in Blue Clay, Irwin River 24 
Plate XI. Fig. 15. — Map showing the Distribution 
of Land and Sea during the Permo- 
Carboniferous Ice. Age 28 
Plate XII. Fig. 16. — Fossil Wood, Dandarragan. 
Cross section X20. Showing 
junction of two annual rings 33 
Fig. 17. — Fossil Wood, Dandarragan. 
Radial section X20, showing med- 
ullary rays, interlocking of tracheias 
and resin vein R between two 
annual rings 33 
Plate XIII. Fig. 18. — Fossil Wood, Dandarragan. 
Radial section X70, showing Pitting 
of T racheids . . . . . 36 
Fig. 19. — Fossil Wood, Dandarragan. 
Cross section X20, showing section 
of gallery made by boring organism 
and now filled with granular phos- 
phate (A), quartz (Q), glauconite 
(G) , and fossil excreta (E) 36 
Plate XIV. 
Fig. 1 (half natural size). — Tuber — 58 
(a) “ heel end.” 
(b) “ rose end ” 
(c) remains of rhizome 
(d) eye. 
Fig. 2 (X25).’ — Section through eye of tuber 
(diagramatic) — 58 
(a) apex or growing point of bud 
(b, V , b " , b'") leaves. 
(c, £■') corky skin 
(v) vascular tissue 
Fig. 3 (X500). — Section through skin and sub- 
jacent layers of tuber — 58 
(a) skin 
(■ b ) phellogen. 
(c) transitional cells 
(d) parenchymatous cells (starch con- 
tents are omitted) 
(e) sclerotic cellj 
