Some of the Constructional Woods of British Guiana. 59 



Plate 4. 

 Konoko. 

 Top 

 Specimen — Weight per cub. ft. CI - 82 lbs. lbs. per sq. inch 



Modulus of rupture 14,296 



Do. of Elasticity 2,495,845 



Breaking weight 7'09 cwt. 



Price per 1,000 feet B.M. f.o.b. Georgetown. — 



Kaharalli (Lecythis sp. or Lecythis ollaria ?) 

 Second 

 Specimen — Weight per cub. ft. 51-9.5 lbs. lbs. persq. inch 



Modulus of rupture 13,378 



Do. of Elasticity 2,375,257 



Breaking weight 663 cwt. 



Description. 

 Hard, heavy fine grain, dense, reddish or greyish brown, said 

 to resist Teredo and Barnacles, common throughout the 

 colony; in places abundant, average height 80 ft. squaring 

 16 inches. 

 Price per 1,000 feet B.M. f.o.b. Georgetown.— 



Brown Silverballi (nectandrasp.) 



Third 

 Specimen — Weight per cub. ft. 43-55 lbs. lbs. per sq, inch 



Modulus of rupture 13,196 



Do. of Elasticity 2,523,669 



Breaking weight 6 - 545 cwt. 



Description. 

 Colour cedar brown to dark brown with black patches here 

 and there, specially adapted for boat-building, not plentiful. 

 Logs 50-60 feet x 18-20 inches. 

 Price per 1,000 feet B.M. f.o.b. Georgetown.— 



Mora (Dimorphandra Mora). 



Bottom 

 Specimen — Weight per cub. ft. 60937 lbs. lbs. per sq. inch 



Modulus of rupture 14,644 



Do. of Elasticity 2,297,794 



Breaking weight 7-26 cwt. 



Description. 

 Planes well and smoothly when of good quality, turns badly, 

 polishes well. Piated one of the 8 first-class timbers at Lloyds, 

 resists dry-rot, but not the Teredo Very durable, nioro so 

 than Teak, one of the best woods for railway sleepers and 

 paving blocks. Makes good durable furniture. Abundant all 

 over the Colony. Often grows to 200 feet and can be had to 

 square 24 ins. free of sap or holes. 

 Price per 1,000 feet B.M. f.o.b. Georgetown 



