192 The Natural Hiftory of the Book Vij}, 
come late in the Year, they greatly prejudice, if not intirely deftroy 
the enfuing Crop ; and fometimes the very young Trees are by this means 
killed. ¥ 
Thefe Worms are of three Sorts, all of the Caterpiller Kind, and diftin. 
guifhed by the Names of the Black-Backs, the Streaked-Back, and the 
Fire-Worm. ‘The laft is of a ruffet Colour, and the leaft; but yet the 
mott deftructive. 
When thefe grow to their deftined Bulk, they fpin and inwrap themfelye, 
in a Bag or Web, like Silkworms, in the few remaining Leaves, or any 
other Covering;, after a few Days Reft in this their Aurelia-ftate, they 
turn into dark-coloured Moths, and fly away. 
Thefe Worms are obferved moft generally to make their Appearance after 
fultry Weather, efpecially if it thunders and lightens, and as the Weather 
is then more than ordinary fultry. 
The WuITE-Woop-TREE. 
T HIS Tree grows toa confiderable Bulk; its Branches are nume- 
rous, and thickly cloathed with Leaves. 
Thefe in Make, Bignefs, and Colour, very much refemble thofe of a 
Laurel. ; 
The Flowers are of the tubular Kind, of a pale White without, and yel- 
lowith within. Their Extremities are much expanded and crumpled, and 
generally divided into five Seétions. 
Thefe are fucceeded by long greenifh Pods, containing a great Number 
of long flattifh Seeds. 
The Locust-TREE ; Lat, Siliqua edulis. 
TH! S grows to be a large Timber-Tree, very full of Branches. 
Thefe are thickly cloathed with Leaves of about three Inches long, 
of a deep-green Colour, and fmooth-edged; and always fet on in Pairs 
upon one common Foottftalk; differing from all other Leaves, by haying 
always one Part of the Leaf divided by the middle Rib far larger than the 
other. The Extremities of the upper Branches have many papilionaceous 
Flowers. 
Thefe are fucceeded by a light-fnuff-coloured rough Pod, of about three 
Inches long, and near two broad; inclofing a whitith {pongy Pith; which 
covers two or three hard blackifh Kernels or Stones. 
The pithy Part hath a {weetifh Tafte, and is fometimes eaten; but the 
Whole hath a very difagreeable ftinking Smell. a 
The Cassta-FisTuLa-TREE. 
YHIS Tree grows in the Ea/ and Weft Indies, as well as in Egypt, and 
T feveral Parts of Afia. Its Height, when full-grown, is ae lefs 
than 
