Another useful set of **graphs** comprises those which give the relation between the expressions of a length, volume, &c., on different systems of measurement.

[[Mensuration Of **Graphs** 38.]] (A) Preliminary.

(B) Mensuration of **Graphs** of Algebraical Functions.

To illustrate the importance of the mensuration of **graphs**, suppose that we require the average value of u with regard to x.

(C) Mensuration of **Graphs** Generally.

On calculation of moments of **graphs**, see W.

184,551,000 Posts and tele **graphs** 41,665,100 Forests and agri cultural dues.

1, 2, 3, 4 (plate) show enlargements from photo- General **graphs** by Hansky at Pulkowa (June 25, 1905); Appearance they are separated by intervals from 25 to 80 of photo- seconds, and he has succeeded in showing identity sphere.

In his theory of **graphs**, or geometrical representations of algebraic functions, there are valuable suggestions which have been worked out by others.