52 The Timbers of British Guiana. 



middle fibrous layer lighter, and the dark epidermis. Surface of 

 log beneath Bark finely striated. 



Uses, Qualities, etc. " The upper planking of boats, partitions, 

 etc., can be obtained in logs 80 ft. by 20 ins. free of Sapwood " (22). 

 Easy to work. Fissile, takes nails badly; planes and turns easily 

 and well; polishes indifferently. Not an ornamental wood, and cf 

 doubtful value for export. 



Authorities. (J. A.) Aiken, MS. 2. Bell, p. 7. 9. Dalton, 

 p. 211. 12. Hawtayne, p. 387. 17. Laslett, p. 452. 22. McTurk, 

 p. 6. 27a., Stone, p. 179, PL XII., fig. 101, 78. 



ANATOMICAL CHARACTERS. 



Similar to those of Brown Cirouaballi, which should be com- 

 pared. See No. 17 and PI. No. 89, Frontispiece. 



Transverse Section : 



Pores. Readily visible with the unaided eye on account of their 

 large size; fairly uniform; evenly distributed; some single, many 

 sub-divided into groups of as many as 7 Pores; few; oval; some- 

 times glistening. 



Radial Section. Lighter in shade than the Transverse. Pores 

 rather prominent, though colourless; coarsely chambered, contain- 

 ing drops of gum that look like silver beads. Rays clearly visible, 

 though not at all conspicuous, bright, reddish flakes. 



Pith. About J in. in diameter, light brown. 



Type Specimens authenticated by Bell, No. 50/2706. Imp. 

 Inst., No. 0234. Rev. J. Aiken, No. A15/3033. No. 2706, 

 although from a log 10 ins. in diameter, is all Sapwood. 



51. NOT IDENTIFIED. 



Native Name, " KILLIKOWA " (2). 



Salient Features. " A light, fairly cross-grained, red-brown 

 wood " (2). Surface like watered silk. 



Physical Characters. Weight (so far recorded), 44 J Ibs. per 

 cubic ft. Hardness, Grade 7, soft; compare Pine. Smell or taste 0. 



Colour of the Heartwood, as above; uniform except for the Pores 

 which are darker. Darkens but little on exposure to the air. Not 

 defined from the Sapwood. Surface brilliantly lustrous. A Sap- 

 wood tree, judging from my specimen, which is about 9 ins. in 

 diameter. 



Bark about ^ in. thick, deep red, lightly fissured, fibrous. 

 When cut across, the fibres'glisten. Surface of log beneath Bark 

 finely striated and frosted with minute drops of gum (lens). 



Uses, Qualities, etc. "A furniture wood. Is readily procur- 

 able in logs up to 36 ft., squaring 8-10 ins." (2). Saws easily. 

 Fissile, takes nails badly; planes and turns easily but badly; 

 polishes indifferently. A pretty wood when cut on the quarter, on 

 account of its satiny lustre and figure. It may find a use as a sub- 

 stitute for Maple. 



Authority. 2. Bell, p. 7. 



