Call Number:

001.043

Repository:

Haverford College Quaker & Special Collections

Extent:

0.02 linear ft. (1 folder )

Language:

English

Preferred Citation:

Gummere's Rule for Calculating an Eclipse of the Sun (HCS.001.043) Quaker and Special Collections, Haverford College, Haverford, PA.

Date:

1835

Creator:

Gummere, John

Abstract:

This collection contains a single article titled "Practical Rule for Calculating from the Elements in the National Almanac, the Circumstances of an Eclipse of the Sun, for a Particular Place," and dated March 6, 1835.

John Gummere (1784-1845) was born in 1784 near Willow Grove, Pa., the son of Samuel and Rachel (James) Gummere. Gummere was a teacher, and taught at Horsham, Pa. (1803) and Westtown School (1808-1815), before opening his own school for boys in Burlington, N.J. (1815). He married Elizabeth Buzby in 1808, and the couple had 11 children: Elizabeth, Frances, George, Henry Deacon, John, Martha, Mary, Rachel, Samuel James, Susan, and William. In 1825, Gummere earned his M.A. from Princeton, and in 1833, he became a teacher at Haverford College, where he would later become superintendent. Among Gummere's published works were: "Treatise on Surveying," "Treatise on Theoretical and Practical Astronomy, and "An elementary treatise on Astronomy."

This collection contains a single article titled "Practical Rule for Calculating from the Elements in the National Almanac, the Circumstances of an Eclipse of the Sun, for a Particular Place," and dated March 6, 1835. The article begins with Gummere outlining the rule's origin and where it was derived from, before giving the rule and providing examples. The final pages of the article contain reference tables for various necessary values.

Materials are arranged chronologically