The Fixes of Australia. 



22 



Furrows or dfcurri-iil channels in which the stomata occur in Callitris 

 glauca, ari* marked in Uiis cross section by arrows, x 80. 



Longitudinal section showing on the Uiwvr U-ft-hand leaf stomatn In tht 

 furrow or decurrrnl channel, C. glauca, x 50. See also Fi^;. 78. 



Sections of Callitris leaves showing tiie disposition of stomata to be identical with that of 

 Lepidodendron Hickii of the Carboniferous period. 



