96 



The Fixes of Australia. 



FISare 46, — Trans\'crse soclion through limber, showing how the man- 

 ganese {black spots) is further removed from the autumnal 

 growth than in Figure 45. C. robusta, x 80. 



Figure 48, — Tangential section through timber, showing the almost 

 entire absence in this case of the manganese compound in 

 the ray cells. The tracheid wall in the centre of the picture 

 connecting the two-celled rays is strongly marked with 

 pitted cells in section. C. robusta, x 210. 



PIgart 47.— Tanscnti^U /4;ctian through tiinbrr of C. rohusta, x 160. 



Figure 49.— Radial b'cli'ju ihrougli limber. Th'j black linear lines arc 

 the mimganese compound content of the cells. C. robusta, 

 X 80. 



Sections of Timber of C. robusta, R.Br, 



