The Cutting op a Billiard Ball—Section
of elephant tusk from which the ball is to be cut; section rounded out
for cutting; the dotted lines show the path the saw follows in cutting
out the ball; when the cutting has been completed inside the squared
section this is divided into two parts, freeing the cut ball.
Although
extremes of temperature are not so serious for ivory as a sudden draft,
still at the docks in London, where the ivory consignments are stored,
explosions are occasionÂally heard as loud as pistol shots, when a
sudden change of temperature manifests itself.
It not infrequently happens that although the section
