integraph

It is something better than my title, for it is an integraph, and not an integrator.

The price for the first complex integraph designed by Coradi was 24 to 30.

An integrator which draws an absolute picture of the sum or integral is better termed an "integraph."

The superiority of the integraph over the integrator cannot be better pointed out than by a concrete example.

Such an instrument is an integraph, and the one I have to describe to you to-night is the outcome of that inquiry.