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Rh towards the Eat, whilt that all the Stars eem'd to perform their diurnal Revolution from Eat to Wet. To his Error they added a econd of much greater Conequence, by imagining that the pretended Heaven of the fix'd Stars advanc'd one Degree eatward every hundred Years. In this Manner they were no les mitaken in their atronomical Calculation than in their Sytem of Natural Philoophy. As for Intance, an Atronomer in that Age would have aid, that the Vernal Equinox was in the Time of uch and uch an Obervation, in uch a Sign, and in uch a Star. It has advanc'd two Degrees of each ince the Time that Obervation was made to the preent. Now two Degrees are equivalent to two hundred Years; conequently the Atronomer who made that Obervation liv'd jut o many Years before me. 'Tis certain that an Atronomer who had argued in this Manner would have mitook jut fifty four Years; hence it is that the Ancients, who were doubly deceiv'd, made Rh