THE TIMBERS OF COMMERCE 



Anatomical Characters. Transverse section : — 



As those of the Brown Cirouaballi, No. 158 which should be 

 compared. 



Pores. Readily visible on account of their large size, grade 

 1-2 : rather coarse, fairly uniform : evenly distributed : some 

 single, many subdivided into groups of as many as 7 : few, 9-15 

 per sq. mm. : oval : sometimes glistening. 



Radial Section. Lighter in shade than the Transverse. Pores 

 rather prominent though colourless : coarsely-cellular, contain- 

 ing drops of resin which look like silver beads. Rays, clearly 

 visible though not at all conspicuous, reddish flakes ; bright. 



Type specimens authenticated by the Forest Officer to the 

 Government of British Guiana, from a log sent to the Colonial 

 and Indian Exhibition. 



No. 158. BROWN CIROUABALLI. Nectandra sp. 



Plate XI. as Fig 99. 



Natural Order. Laurineae. 



Alternative Name. Dark Cirouaballi or Sirouaballi. 



Sources of Supply. British Guiana. 



Physical Characters, etc. Recorded dry-weight 49J lbs. per 

 cu. ft. Hardness Grade 3, compare Blackthorn. Smell none. 

 Taste slightly astringent. Smell slightly resembling Sandal- 

 wood when sawn. Burns well with much crackling : heat expels 

 drops of brown resin: embers glow in still air. Solution with 

 water colourless, with alcohol pale brown. 



Grain. Moderately coarse and open ; dense. Surface lustrous. 



Bark. ? 



Uses, etc. " Boat-building, for which it is specially adapted " 

 (47). A serviceable though not very ornamental wood : turns 

 exceptionally well and takes an excellent finish without trouble : 

 planes smoothly in one direction : saws easily. Can be met with 

 in logs up to 90 ft. long by 36 in. sq. (78). 



Authority. McTurk (78), No. 50. 



Colour. Dark brown with black here and there. Sap-wood ? 



Anatomical Characters. Transverse section: — 



Pores. Conspicuous (when the wood is scraped), on account 

 of their size and colour : difficult to see when the wood is merely 

 planed : size 1, coarse, little variation : evenly distributed : 

 some single, many subdivided in groups up to 10 : few 9-22 per 

 sq. mm. : oval : a suggestion of loose straggling lines : some- 

 times contain a dark resin. 



Rays. Just visible, size 5, fine, uniform : equidistant, less 

 than the width of the large pores apart, avoiding them, other- 



180 



