XXII.] 
LAUAN. 
I 43 
officially reported upon to the Spanish Government only 
a short time ago :— 
Table LXVI. 
Arc of flexion produced 
by a constant weight 
of 2,204 lbs. hung from 
the centre. 
Arc at which 
fracture 
took place. 
Weight applied 
at centre 
of the arc. 
Distance between the 
supporters of the wood. 
Inch. 
Inches. 
lbs. 
Inches. 
°'43 
3 ’IS 
14-99 
23-62 and 26-77 
Table LXVII. 
0 
Resistance 
T 3 
J) ci 
V 
O O 
O • tJ 
75 | 
To pressure 
O 
CG£ G 
.2 a .2 
dS 0.2 w 
<u jz: ■£ W) 
6 1 E-J 
4$ 
co-efficient 
of fracture T. 
-G ’5 
On 
the grain 
perpendi¬ 
cularly. 
ei I'l 
•3 2 8 -° 
ra ^375 
4-1 bJ 3 .y 
c m 
<u x; 
u 
0 
■g’S. 
£ " 
With the 
grain of 
the fibre. 
a g ZS 
1) u Al 
hs 8 
O 
.Sf-s s 
Absolute 
strength. 
Applicable 
strength. 
lbs. 
•94S 
lbs. 
498 -24 
lbs. 
198-41 
lbs. 
152999 
Inch. 
•038 
lbs. 
152 99 
lbs. 
15816 
lbs. 
168-43 
lbs. 
16-84 
Remarks.—W eight producing fracture at the hend, 1-32 lb. T co-efficient of fracture 
by bending, or of maximum bend. 
Father Gaspard de St. Augustine says, in his manu¬ 
script History of the Philippine Islands, that the outside 
planks of the old Manilla and Acapulco galleons were of 
Lauan wood, and that it was chosen because it does not 
split with shot. 
THE ACLE, No. 7 (Mimosa Acle, yuga xylocropa),* 
is without thorns or excrescences. The Indians use it for 
the construction of their houses, and prize it for its good 
quality. In working it causes sneezing. The bark is 
* Blanco’s “ Philippine Flora. 
