4 The Timber t of British Guiana. 



Few; single; also many sub-divided into groups of 2-6 Pores. The 

 oblique lines are continuous over long radial distances. 



Rays. Visible with the lens ; very fine ; uniform ; regular ; 

 straight; about the width of a Pore apart, scarcely avoiding 

 them. 



Rings. Ill-defined; boundary doubtful, but here and there is 

 a zone poorer in Pores and occasionally a fine line. Contour 

 regular; apparently averaging 5 per inch of radius. 



Soft Tissue of definite arrangement; type of Ineeriballi No. 41 

 of this series, i.e., surrounding, imbedding and connecting the 

 Pores as above. (Perhaps also in the occasional boundary-line to 

 the Rings.) 



PitK.( ?) 



Radial Section. Lighter in shade than the other sections and 

 more lustrous. The Pores appear as coarse, shining grooves. The 

 Rays are very small, inconspicuous, whitish flakes. The Rings 

 Are not indicated. 



Tangential Section. As the Radial but the Rays need the 

 lens being very minute, scarcely perceptible, white lines, and are 

 About '25 m/m. high. 



Type Specimens. Authenticated by Bell, No. 3/2659. Im- 

 perial Institute (from Colonial and Ind. Ex.), No. 0370. 



4. NOT IDENTIFIED. 

 Nat. Ord., LEGUMINOS.E. Native Name, " ASSAKOOLA " (2). 



Salient Features. A hard, heavy, close-grained, reddish-brown 

 wood. 



Physical Characters. Weight (so far recorded), 59 Ibs. per 

 cubic ft. Hardness, Grade 6, firm; compare Teak. Smell and 

 taste 0. Apparently a Sapwood tree. My specimen is from a 

 tree 9 ins. in diameter and has no Heartwood, but this is by no 

 means conclusive. Darkens a little on exposure to the air. 

 Surface bright. 



Bark. About in. thick, nearly smooth ; of two layers, the 

 laminae of which (in Trans, sec.) run at right angles to each other. 

 Surface of log beneath the Bark, striated deeply. 



Uses, Qualities, etc. " Suitable for house-framing is readily 

 procurable up to 25 ft. in length, squaring 8-9 inches " (2). Very 

 hard to saw. Fissile, takes nails badly; the specimen was shat- 

 tered into a number of separate pieces by shakes. Planes and 

 turns hard and badly. Polishes badly. Of little, if any, value 

 for export. 



Authorities. 2. Bell, p. 3. 12. Hawtayne, p. 387. 17. Lns- 

 lett, p. 452. 20. McTurk. 



ANATOMICAL CHARACTERS. 



Transverse Section. Similar in shade to the other sections 

 ^approximately) . 



