Recreations in science and natural philosophy (1844)
Ozanam, Jacques, 1640-1717. n 93006101, Montucla, Jean Etienne, 1725-1799. n 85800222, Hutton, Charles, 1737-1823. n 84160398, Riddle, Edward, 1788-1854. no2004015425 · London : Thomas Tegg · leaf 550
e at the end of the 18th Italian hour ; and on the day of the summer solstice at 17 minutes after the 16th hour. Noon, therefore, or 12 hours, counted according to the astronomical hours, corresponds, on the day of the equinox, to the 18th Italian hour; and on the day of the solstice to 17 minutes… … line, the point of noon marked on the equinoctial line, and that of 2 hours 17 minutes on the tropic oi arc of the sign Cancer, and inscribe there 18 hours. Join also by transversal lines 1 hour on the equinoctial and 3h. 17m. on the arc of Cancer ; then 2h. and4h. 17m., &c. ; and before noon 1 1…
Scientific recreations
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