40 The, Timbers of British Guiana. 



Colour of Heartwood as above ; inclined to be streaky ; darkens 

 but little on exposure to the air ; very sharply denned from the 

 Sapwood. Surface (in Radial Section), lustrous. 



Bark (?). Surface of log beneath Bark smooth. 



Uses, Qualities, etc. " A good furniture wood. Readily pro- 

 curable in logs from 30-40 ft., squaring 8-9 ins." (2). Saws 

 easily. Fissile, takes nails badly. Planes and turns badly though 

 easily. A handsome wood, but of doubtful value for export. 



Authority. 2. Bell, p. 6. 



ANATOMICAL CHARACTERS. 



Similar to those of Hoobooballi, No. 35, or Trysil, No. 55, with 

 the following differences : 



CF. No. 39 FRONTISPIECE. 



Transverse Section. Rather darker and much duller than the 

 other sections. 



Pores. Visible with the naked eye on account of their light 

 colour. 



Rays. Just visible with the naked eye. 



Rings. Well denned; boundary an interruption in the con- 

 tinuity of the growth, accompanied by a darkening of the colour; 

 contour regular; average number per inch of radius 6'5 in my 

 specimens. 



Pith. (?) 



Radial Section. Glossy. The Pores are rather fine scratches. 

 The Rays are rather conspicuous (though narrow), from their con- 

 trast with the glossy ground. The Rings are indicated by the 

 colour-stripes. 



Type Specimens. Authenticated by Bell, No. 39/2695. 



40. NOT IDENTIFIED. 



Nat. Ord., SAPOTACE.E. Native Name, " HYMARIKUSHI " (2). 

 FRONTISPIECE No. 40. 



Salient Features. A very solid, compact, heavy, fine-grained 

 wood, of a reddish or warm nut-brown colour. Structure readily 

 visible. 



Physical Characters. Weight (so far recorded), 79 Ibs. per 

 cubic ft. Hardness, Grade 3, very hard ; compare Blackthorn. 

 Smell when dry, little, if any. Taste 0. 



Colour darkens considerably on exposure to the air. Surface 

 bright and cold to the touch. Possibly a Sapwood tree; there 

 is no distinction between Sap and Heart in my specimen, which 

 is 6 ins. in diameter, and all dark wood. 



Bark. About in. thick, nearly smooth, scaling in thin flat 

 flakes; red. A little fibrous bast within. Surface of log beneath' 

 Bark, finely striated. 





