THE TIMBERS OF COMMERCE 



very well, no aroma, embers glow in still air and the sound 

 wood smoulders away like touchwood. Solution colourless : 

 not coloured by potash. 



Gr r,n. Very fine and even : surface very dull except that of 

 the 'ays, which is lustrous. 



Bark. Brown, J- J inch thick, of two layers : the outer con- 

 sisting of small irregular, crumbling, corky scales : the inner of 

 many layers of lace-like bast readily separating and riddled 

 with spindle-shaped perforations caused by the continuations 

 of the ■ ays into the bark. 



Uses, etc. Doubtful : not recorded. Works very easily and 

 smoothly and has a pretty figure when quartered. 



Authority. Boulger (12), p. 480. 



Colour. Heart-wood whitish-brown, not very sharply defined 

 from the x\~2 inches of apparently perishable sap-wood. 



Anatomical Characters. Transverse section: — 



Pores. Need lens, size 4, little variation : in concave (dentate) 

 festoons like the rungs of a ladder between the 1 ays and confined 

 to a narrow zone of soft-tissue : 70-120 per mm. : isolated : 

 round. 



Rays. Prominent, size 2-3, uniform : few, 1-7 per mm. : 

 tapering both ends to fine points : curved but not avoiding the 

 pores : white. 



Rings. Clear if indicated by the loops of soft-tissue. 



Soft-tissue. In festoons between the rays in numerous 

 continuous, concentric zones of contour forming a beautiful 

 tracery with the rays. 



Radial Section. Pores; need lens, very fine scratches only. 

 Rays; readily-visible, white flakes. Soft- tissue visible in a 

 close, regular series of fine white, parallel lines. 



Tangential Section as the Radial. The rays are not easily 

 seen except under the bark where they penetrate the layers of 

 bast : about ij mm. high. The soft- tissue is much less 

 prominent. 



Type specimen authenticated by the Forest Officer to the 

 Government of New Zealand (A.G.). 



No. 8. LACE-BARK. Hoheria populnea. 

 A. Cunn. 



Plate XVIII. Fig. 157. 

 Natural Order. Malvaceae. 

 . Source of Supply. New Zealand only. 



Alternative Names. Whau Whi (A.G.). Powhiwhi : Ribbon- 

 wood (12). 

 Physical Characters, etc. Recorded dry-weight, 42 lbs. 



8 



