60 Timehri. 



Plate 5. 



Yellow Silverballi (Nedundra S}>.) 

 Top 

 Specimen — Weight per cub. ft. 349 lbs. lbs. per sq. inch 



Modulus of rupture. 10,958 



Do. of Elasticity 1,767,890 



Breaking weight 5 43 cwt. 



Description. 

 Chiefly used for the upper planking of boats, average height 

 60 ft , small trees giving 8 in. to 10 in boards readily procur- 

 able. 

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



Grabwood (Carapa guyanensis). 

 Second 

 Specimen — Weight per cub. ft. 45 91 lbs. lbs. per sq. inch 



Modulus of rupture 14,095 



Do. of Elasticity 2,124,964 



Breaking weight 6'99 cwt. 



Description. 

 Very much resembles Mahogany but ruus much darker and 

 when polished assumes a walnut rather than a mahogany 

 colour. A handsom furniture wood. Logs 40 ft. by 9 in. to 14 

 inches. Plentiful throughout the Colony. 

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



Maporo-Kong. 



Third 

 Specimen — Weight per cub. ft. 45-91 lbs. lbs. per sq inch 



Modulus of rupture 12,258 



Do. of Elasticity 2,081,598 



Breaking weight G'08 cwt. 



Price per 1,000 ft. f.o.b. Georgetown. — 



Determa (Nectandra Wana). 

 Bottom 

 Specimen — Weight per cub. ft. 39 88 lbs. lbs. per sq. inch 



Modulus of rupture 7,494 



Do. of Elasticity 1,060,784 



Breaking weight 3 717 cwt. 



Description. 



A pinkish red wood of uniform colour and general utility, 

 much used in the Colony for masts and spats. Logs procurable 

 from 30 to 40 ft. x 12 to 18 inches. 

 Price per 1,000 ft. H.M. f.o.b. Georgetown.— 



