And the same king, when
he had given the crazy and cruel order that the population of Dehli should
evacuate the city and depart to Deogir, 900 miles distant, having found
two men skulking behind, one of whom was paralytic and the other blind,
caused the former to be shot from a mangonel. (I.B. III. 395, 315.)
Some old drawings represent the shaft as discharging the shot from a kind
of spoon at its extremity, without the aid of a sling (e.g. fig. 13);
but it may be doubted if this was actually used, for the sling was
essential to the efficiency of the engine. The experiments and
calculations of Dufour show that without the sling, other things remaining
the same, the range of the shot would be reduced by more than a half.
In some of these engines the counterpoise, consisting of a timber case
filled with stones, sand, or the like, was permanently fixed to the
butt-end of the shaft. This seems to have been the Trebuchet proper. In
others the counterpoise hung free on a pivot from the yard; whilst a third
kind (as in fig.