The Forests of British Guiana. 177 
free from sap and holes. The largest mora trees grow 
on the Barima and Wai-ini Rivers, where they have not 
been cut or burnt down. 
Mora-bucquia, which grows on high land, is inferior 
both in quality and size to the red and white varieties, and 
is never used by those acquainted with it except for inside 
work, where it will not be exposed to the weather. 
It is often sold to persons to whom it is unknown, as 
mora, and, when worked up, disappoints its purchaser 
and gives to all other kinds a general bad name. Mora- 
bucquia seeds are used by the Indians in making an in- 
feiior kind of bread, only used in times of scarcity. 
SoUARl (Caryocar tomentosum, Dec) thrives best and 
seems to attain its largest size on the hills composed 
of a stiff yellowish clay, mixed with a gravelly kind of 
stone resembling oxide of iron. The trees are plentiful 
throughout the forest region, and seldom very far from a 
creek or the main river. Their average height is about 
90 feet, and the timber can easily be squared to 24 
inches ; it is very tough and cross-grained. The trunks 
of the trees are seldom used, but the roots make excel- 
lent floors and futtocks for ship-building, and can be had 
sufficiently large to timber a vessel of large size. The 
souari-nut (butter-nut), well known both in and without 
the colony, is the fruit of this tree. The nuts, three or 
four in number, grow enclosed in a pulpy substance 
within a hard, round fruit. 
DETERMA grows best in clay soil mixed with some 
gravel, and is probably more plentiful near Moraballi 
Creek, a tributary of the Essequibo River, than in any 
other part of the colony below the rapids. The average 
