An examination of the century question : To which is added, a letter to the author of 'Outlines of astronomy' [Sir J.F.W. Herschel], respecting a certain peculiarity of the Gregorian system of bissextile compensation / [By A.G. Brae?].

Licence: Public Domain Mark

Credit: An examination of the century question : To which is added, a letter to the author of 'Outlines of astronomy' [Sir J.F.W. Herschel], respecting a certain peculiarity of the Gregorian system of bissextile compensation / [By A.G. Brae?]. Source: Wellcome Collection.