Book excerpt: Excerpt from Fasti Temporis Catholici and Origines Kalendariae, Vol. 1 of 4 On the measure of the diurnal rotation, as including the cycle of Light and Dark: that is by the mean solar day; Conclusion from the above premises. Sense and meaning of the terms Noctidiurnal Cycle, as used in the Fasti Catholici; Objections to the above assumptions; On the measure of time by the month. The measure of time by the month derived from the Moon, not from the Sun; On the two principal modes of measuring the interval of time called the month; from the conjunction to the conjunction, or from the opposition to the opposition; On the mean standard of the lunar revolution. 1 On the standards of antiquity; 2. Modern standards of the same kind; Of the mean lunar standard of the Fasti Catholici; On the measure of time by the year. Conditions required for this measure; On the various measures of the natural or tropical year, ancient and modern; Standards of the natural or tropical year, both ancient and modern; Standard adopted in the Fasti Catholici; On the substitution of civil for the natural measures of time in general; On the reasons of this substitution. The natural measures prior to and independent of the civil. The civil posterior, and necessarily accommodated, to the natural; Objection, from the matter of fact at present, relating to menstrual time, or the measure of time by the month; The cycle of day and night the primary or elemental principle of both classes of measures, both the natural and the civil; and why; The substitution of the civil for the natural measures of each kind, a necessary consequence of the above principle About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works."