440 R. T. BAKER. 



lumen, the wall apertures being very few and very small, 

 ovate and longitudinal. The pores are not numerous, the 

 wood parenchyma running in lines between the solid mass 

 of fibres, and also around them. A few crystal wood 

 parenchyma were present. The vessels have very numer- 

 ous wall-pits, the partition walls of the cells belong to the 

 scalariform variety; some contain a brown deposit. The 

 rays are fairly numerous, varying from uniseriate to three 

 and four cells wide and several cells high. 



6. Emmenospermum alphitonioides, F.v.M. 

 N.O. Rhamnese. 

 This is not so uniformly structured as its congener 

 Alphitonia excelsa. The fibres are arranged in regular 

 radial rows, but of varying diameters, and have only a 

 medium thickness of wall, giving a comparatively large 

 lumen, the wall perforations being few. The vessels are 

 fairly numerous, but often two or three conjugate, the 

 walls being strong and full of perforations, but free from 

 tyloses. The wood parenchyma is exceptionally sparse, 

 whilst the rays are numerous and from one to several cells 

 wide and also in height; a few crystals were seen in the 

 latter. 



7. Ratonia tenax, Benth. N.O. Sapindaceae. 

 This wood is of a uniform texture, the fibres being of 

 equal diameter, with walls of medium thickness, thus leav- 

 ing a fair sized lumen; the numerous wall perforations 

 running with the long axis of the fibres. The vessels are 

 rather small, but fairly numerous and scattered irregularly 

 throughout the other wood elements, and with an absence 

 of tyloses. The wood parenchyma is more limited than 

 that of most timber examined, and the few seen had their 

 cells filled with crystals. The ray parenchyma had in 

 almost every instance a deposit in the narrow horizontal 

 ^ells; vertical cells border these top and bottom. They 



