OF LOWER. G BEEN SAN J) PLANTS. 



319 



contents of the canal are solid and very black. The canals 

 must run for a very short distance in any given direction, for the 

 longitudinal section of the trunk shows as many canals cut 

 transversely as does the transverse section. Without any very 



m. 



Text-fig. 103. Colymbetes Edwardsi, sp. nov. Transverse section of a small 

 part of the perimedullary zone of wood (cf. pm., text-fig. 101) ; 

 jr., groups and rows of xylem ; m., medullary rays and ground-tissue ; 

 9., gum-canal; p., pith-cells; s.. starch-containing pith-cells. No. 

 V. 6127*. 



