piiiiji'riXE wooivs. 365 
Diffuse porous. — AVith tlie vessels of approximately iiiiifonn size and 
scattered tlirough tlic ring. 
Wlierever the rings have secmefl to be doii])tt'iilly distinct, the wood 
has been included in botli sections of the kev- This will exi)laiu whv a 
nuiii])er of woods arc found more than once. 
Unless especially otherwise indicated, the color credited to a given 
wood is that of the heartwood. 
In using this key, no special eiiuipinent is needed beside a sharp jack- 
knife and a small lens capable of magnifying as much as five diameters. 
The end of tlie block used should be carefully smoothed with the knife, 
so tliat the different structural features may be seen "with the lens. 
Ordinarily, the cross section is the only one used, as it shows nearly all 
of tlie points wliich it is necessary to observe. 
The figures used to illustrate this key have been made with a uniform 
magnification of about five diameters. 
Key to PhUippinr oonnncrrhtl woods. 
a. NoM'oKoL's WOODS IJkxgL'Et ri.NK («eeiig. 1). 
Ork<jox fink. 
California rkdwood. 
aa. PoRors woous. 
6. Seasonal kknus distinct. 
c. Ring porous. 
d. Wood parenchyma in wavy, tangential lines. 
€. Tangential nection showing faint, parallel, transverse lines; distinct, 
sweetish, cedary odor; wood coloring water a fluorescent hJuu. 
Narra (see fig. 2). 
ee. Not as above. 
/. Pale to dark red liANAHA.(8ee fig. 3). 
ff. Brownish to dark brow nish ; vessels containing glistening daik- 
colored deposits JJATiTiNAX (see fig. 4). 
(Id, Parenchyma lines wanting. 
e. Moderately heavy to heavy and bard; yellow to very dark brown; 
(Strong, spicy odor Teak (see fig. 5). 
ee, Liglit and soft; led; cedaiy odor Calaxtas (see fig. 0). 
cc. Dill'use porous. 
d. Wood parencliyma prominent. 
e. In concentric lines. 
/. Pitli-rays very small. 
g. Wood. soft and white, with bitter taste Dita (sec fig. 7). 
(fg. Not white. 
h. Wood forming a latlier when rubbed with water or saliva; ves- 
sels in oblique nidiul lines. 
i. Very liard and heavy; very daik red HA.\SArAGUi.\. 
a. Lighter in weight and color; not quite so hard. 
Betis (see fig. 8). 
■ 
hk. Wood not forming a latlier whtm rubbed. 
i. Vessels niodiuni size, scattered, not numerous; wood paren- 
chyma lines very distinct Lilsia (see fig. 9). 
