.302 
Proceedings of Royal Society of Edinburgh. [sess. 
Application of Miller’s Trisector to the Quinquesection 
of any Angle. By James N. Miller. Communicated by 
Dr Knott. 
(Read July 7, 1902.) 
The diagram outlines the Trisector as in the position in which 
the angle B AL, which may be any angle of less than 225°, is by 
its aid divided into five equal angles. 
That instrument was described to this Society in a communica- 
tion submitted to them on the 4th of November last. It consists 
of two pieces, AIFD and B H G. Those pieces are conjoined, as 
fhe blades of a pair of scissors are, by a small cylindrical pin 
inserted in a small cylindrical hole at C in each of them, which it 
fits, and round which they may turn. 
As a step towards this division of the angle, a perpendicular, 
K Q, to its side, A L, is drawn from the point K in it, which is 
at the same distance from its vertex as the point I is from the 
