| Description | Mathematical Tables; inscribed on title page ' James Elgar May 8th 1756'. Originally entitled 'A system of mathematical tables by James Elgar and John Newton' and bound with 'Tabulae Mathematicae' by John Newton. Introduced as a Hemerologium by James Elgar, 1750; a 19 year diary or calendar for 1751 and 1769, showing the moveable feasts, saints days, phases of the moon, times of sunrise and sunset and eclipses. Tables also include Kings and Queens, specific gravity for various liquids, currency, other weights and measures including in relation to land for harvest, logarithms, sine of chords and extensive astronomical tables relating to the sun's eliptical, the movements of the moon and planets Mercury, Venus, Mars, Jupiter and Saturn. |