22 Hit Timbers of British Guiana. 



evidence of Mr. McTurk, this wood should command a market on 

 the strength of its suitability for spars, etc. Apart from this 

 recommendation, I think that picked logs of this wood may com- 

 mand a sale on their own merits. 



Authorities. 2. Bell, p. 4. 20. McTurk, p. 3. 



ANATOMICAL CHARACTERS. 



Transverse Section. Not much darker than the other sections. 



Pores. Visible with the naked eye as perforations, rather 

 large but not prominent, lacking contrast; not diminishing to the 

 close of the season's growth, little variation. Single or sub-divided 

 pairs. Unevenly distributed, being linked up into long, straggling 

 oblique lines. 



Rays. Visible with the lens, fine, uniform, irregular, rather 

 less than the width of a Pore apart, lightly avoiding the Pores. 



Rings. Not defined ; boundary doubtful ; contour ( ?) 



Soft Tissue. Of definite arrangement being in the form of rings 

 (sheaths), or patches round the Pores or adjoining them, thus link- 

 ing them up in long series. 



Radial Section. The Pores appear of a deeper red than the 

 wood and as fine, open grooves. The Rays are very inconspicuous; 

 more distinct in the Sapwood. The Rings are not indicated. 



Tangential Section as the Radial, but the Rays need the micro- 

 scope, being minute, transparent lines about '2 m/m. high. 



Type Specimens. Authenticated by Bell, No. 21/2677. There 

 is a wood mentioned in the Guide to British Guiana under the name 

 of " Determa," Nectandra Wana, and I have a specimen from 

 Berkhout labelled " Wana," which is not unlike our specimen. 

 The "Wane" described by Martin-Lavigne (20c), p. 136, resem- 

 bles this species, but he is not satisfied that it is correctly named as 

 Terminolia buceras. Hook. 



22. NOT IDENTIFIED. 



Nat. Orel., ANACARDIACE.E, apparently near TAPIRIRIA. 

 Native Name, " DUKA " (2). 



Salient Features. A light, soft, pinkish or light-brown wood, 

 resembling a very inferior Mahogany or Cedar. There is a ten- 

 dency of the Pores to bleed and make minute stains upon the sur- 

 face of the wood. 



Physical Characters. Weight (so far recorded) 35 J Ibs. per 

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



Colour. Of Heartwood, darkens slightly on exposure to the air. 

 Surface lustrous. Not denned from the Sapwood, but gradually 

 passing into it. Sapwood the colour of oatmeal, width about 2-2J 

 ins. 



Bark. T \ to J in. thick; smooth with small, oval warts 

 (lenticels); fibrous-laminated within. Surface of the log beneath 

 the Bark, smooth or striated. 



