A cinematographic film of a tornado which formed over a severe bushfire in 1962 in Victoria has been analysed. Notable findings are that a flame rose in the core to a height of 2.60 feet, that the core velocities were up to 205 m.p.h. vertically, at least 2.0-30 m.p.h, horizontally and 15-30 revolutions per minute rotationally, that nearby parcels of air rose at up to 100 m.p.h. without spinning and that despite these conditions the ground winds were not strong enough to damage trees.
A. R. King (Sun,) studied this question.