[1561]. It is almost impossible to follow the later developments of physical or general chemistry without a working knowledge of higher mathematics.—Mellor, J. W.

Higher Mathematics (New York, 1902), Preface.

[1562].

... Mount where science guides;

Go measure earth, weigh air, and state the tides;

Instruct the planets in what orb to run,

Correct old time, and regulate the sun.

—Thomson, W.

On the Figure of the Earth, Title page.