PHILIPPINE WOODS. 
359 
Weight and specific gravity . — We have quite a large number of heavy 
woods, although perhaps not so large a proportion as is found in some 
other tropical countries. I have classified our woods as very heavy, 
heavy, moderately heavy, and light, following the classification used 
by Gardner . 1 We have many woods which when green will sink in water, 
but the number of these which has a greater specific gravity than water 
when dry is relatively small. The following table gives a list of Philip- 
pine and American commercial woods, with their weight and specific 
gravity so far as known. 
The heavy woods which are italicized frequently come into the “very 
heavy” class. 
Comparative weights of Philippine and American woods. 
PHILIPPINE WOODS. 
Very heavy. 
Sp. gr., 0.90 or more. 
Weight. — Metric sys- 
tem, 900 kilos or 
more per cu. m.; 
English system, 56 
lbs. or more per 
c u . ft.; Spanish 
system, 42 lbs. or 
more per cu. ft. 
Heavy. 
Sp.gr., 0.70-0.90. 1 
Weight. — Metric sys- 
tem, 700-900 kilos 
per cu.m.; English 
system, 44-56 lbs. 
per cu. ft.; Spanish 
system, 32-42 lbs. 
per cu. ft. 
Moderately heavy. 
Sp. gr., 0.50-0.70. 
Weight.— Metric sys- 
tem, 500-700 kilos 
per cu.m.; English 
system, 31-44 lbs. 
per cu. ft.; Spanish 
system, 23-32 lbs. 
per cu. ft. 
Light. 
Sp. gr., 0.50 or less. 
Weight. — Metric sys- 
tem, 500 kilos or 
less per cu. m.; 
English system, 3f 
lbs. or less per cu. 
ft.; Spanish sys- 
tem, 23 lbs. or less 
per cu. ft. 
Mancono. 11 
Dungon-late. b 
Ebony. 
Camagon. 
Bolongeta. 
Dungon .“ 
W* 
Molave.” 
YacalA 
Tindalo." 
BetisA 
BansalaguinA 
Supa. a 
Maeaasin. a 
Batitinan." 
Arango , . a 
SasalitA 
LiusinA 
Tucan-calao. 
Alupag. 
Catmon."- 
AgohoA 
Calamansanay. 
Mangachapuy.» 
Batete. 
Lanotan." 
Narra." 
Acle. a 
Teak. b 
Guijo. a 
Apitong. 0 
Amuguis." 
Palo maria." 
Banaba. 
Anubing. 
Bancal. b 
1 Tamayuan. 
Sacat. a 
Malasantol." 
Balacat." 
Malugay." 
Banuyo." 
Tangible." 
Lanete. 
Duguan. 
Santol. b 
Nato. 
Dalinsi. 
Calumpit. 
Talisay. b 
Balinhasay. 
Lumbayao." 
Batino. 
Lauan. a 
Baticulin. 
Calantas." 
Mayapis." 
Red lauan. a 
Dita. b 
Cupang." 
Teluto. 
Malapapaya. 
“The specific gravity of these woods was obtained from tests made in Manila. 
i> These woods were grouped by data found in Gamble’s Manual of Indian Timbers. 
Bur. For. Bull., Manila (1907), 4, 51. 
