Easy lessons in the differential calculus: Indicating from the outset the utility of the processes called differentiation and integration

by Richard A. Proctor

This item is the hardcover book "Easy Lessons in the Differential Calculus" by Richard A. Proctor. The book was published in 1887 by Longmans, Green and Co. Book was printed in London and has a copyright of 1887. Book appears to be a First Edition. Book is in very good condition. There are 114 pages and two pages of ads for other books. No markings. Binding is SOLID. A bit of wear to the corners of the covers. Small ding to the bottom edge of the front cover. This First Edition is extremely scarce. Book measures 7" by 4 3/4".

Unknown Binding

First published September 27, 2015

About the author

Richard Anthony Proctor (23 March 1837 in Chelsea, London – 12 September 1888) was an English astronomer.

He is best remembered for having produced one of the earliest maps of Mars in 1867 from 27 drawings by the English observer William Rutter Dawes.

His map was later superseded by those of Giovanni Schiaparelli and Eugène Antoniadi and his nomenclature was dropped (for instance, his "Kaiser Sea" became Syrtis Major Planum).

He used old drawings of Mars dating back to 1666 to try to determine the sidereal day of Mars. His final estimate, in 1873, was 24h 37m 22.713s, reasonably close to the modern value of 24h 37m 22.663s. Nevertheless, Frederik Kaiser's value of 24h 37m 22.622s is closer.

A crater on Mars is named after Proctor.