The YJ-ood compares favorably ./ith Teak in its mechanical properties and is 

 comparable to Teak in density. It is moderate in shrinkage and fair in its 

 weathering characteristics as shown in Table 1. The wood is durable with 

 respect to decay althoiigh not e::ceptionally so. Its reputation for high 

 marine borer resistance has been referred to previously. These properties 

 particularly recommend the use of Angelique for marine piling and submerged 

 construction in marine borer infested waters, although it also appears to 

 be suitable as a Teak replacem,ent for many purposes including boat and ship 

 decking, 



Sm Determa ( Ocotea rubra). This species, v/hich is related to Greenheart 

 ( Ocotea R odiaei ) but is not similar to it, occurs throughout the lo-yTlands 

 of the Gi^ianas and the louver Amazon region. The tree is large and straight- 

 boled reaching diameters of 2~h feet, heights of 100 feet or more, and is 

 free of branches for uO-TO feet. 



The wood j.s li:;hter and weaker than ^ihite Oak as shown in Table 1. Shrinkage 

 is moderatei and TJeataering characteristics excellent. The wood is durable 

 with respect to decay, although not outstanding in this respect, and is used 

 in the tropics for both interior and exterior construction. Its comparative 

 softness is not favorable for uses involving abrasion or heavy Yirear. In 

 addition to its favorable resistance to marine borers shown in these tests, 

 Determa did not deteriorate appreciably ^Then subjected to marine borer 

 attack in Honolulu Harbor for 13 raonths (h). 'Ihe wood contains no signi- 

 ficant quantity of silica but does include considerable quantities of a 

 characteristic v; ax (?), 



6. Coco de Mono ('"-schweilera tenax) . Coco de Ilono is the name commonly 

 applied in Vene'^.ueTiTt^'specries of""the genus EschTfei] era. The wood used in 

 these tests or:.ginated in the state of Poi-tugueba, Ve".ezuela. The general 

 properties of the -anbarklak group of the genus gs oh?' ell era, as given in 

 the description of Moi'rab, are believed to apply" to this species as well. 



7. Cumaru Preto ( Tar ale a sp.,). No specific information is available con- 

 cerning the particular species in these tests. It is presumably one of 

 several species of the genus Taralea which includes medium-sized to rather 

 large trees in the Amazon basin and possibly in eastern Peru, Venezuela, 

 and tho C-:;:.arias. Tlie wood is extremely hard and strong. Its air-dry weight 

 is about 75 pounds per cubic foot. Decay resistance is presumed to be ex- 

 cellent:^ and xlie timber is su.:.table for heavy durable construction but not 

 utilized at present to any extent--, 



8. Black Kakeralli (Eschweilsra %gctiana). This species is closely related 

 to the i'''a.r.bL\rl.:lak previlrasi/ referred" to,'" Although at least l5 species of 

 Eschws::"l,--ra, all knowM as Kakeralli, gi-ow in British Guiana, at least three- 

 Youf^'Tr''-:hB total volume in most areas consists of Black Kakeralli. It 



is foui.d throDghcut most of the cliraax rain forests of British Guiana but 

 is most abandant in tne western districts. These trees frequently attain 

 diameters of 2 feet or more and heights of 100 feet. Buttresses are small 

 or absents Tiinbers squared to 12 inches and hO feet long, and round piling 

 up to 60 feet long, are obtainable. 



T - 11 



