...To Gregory we owe the canto fermo,or Gregorian chant, which, if properly executed, impartssuch a grave and solemn character to the ceremonies of ourchurch...
Rodolfo Lanciani 「Pagan and Christian Rome」
...Omar, a Persian astronomer, suggested a reformation of thecalendar which, if it had been adopted, would have insured greateraccuracy than can be attained by the Gregorian style now in use...
Thomas Orchard 「The Astronomy of Milton's 'Paradise Lost'」
...An adaptation of the Gregorian was the"Cassegrainian" telescope, devised by Cassegrain in 1672, which differedfrom it chiefly in the small mirror being convex instead of concave (, p...
Cecil G. Dolmage 「Astronomy of To-day」
...Finally, in 1774, he had made himself a Gregorian telescope, and hadbegun to view the heavens...
Edward Singleton Holden 「Sir William Herschel: His Life and Works」
...Before his time theprincipal aids to observation were the Gregorian and Newtoniantelescopes of , and the small achromatics of ...
Edward Singleton Holden 「Sir William Herschel: His Life and Works」
...In this way I made not less than two hundred seven-foot, one hundred and fifty ten-foot, and about eighty twenty-foot mirrors, not to mention the Gregorian telescopes...
Edward Singleton Holden 「Sir William Herschel: His Life and Works」
...—A problem similar to theabove but more complicated consists in finding the day ofthe week on which any given date of the Gregorian calendarfalls—e...
George C. Comstock 「A Text-Book of Astronomy」
...The Gregorian had thus the sentimentaladvantage of being pointed directly at the object...
Cecil G. Dolmage 「Astronomy of To-day」
...The Julian and Gregorian calendars are frequently representedby the abbreviations O...
George C. Comstock 「A Text-Book of Astronomy」
..., by , together with theLitany Chant, and other portions of Gregorian Music not included inhis work; thus forming a complete Choral Book for the Service of theEnglish Church...
William Pridden 「Australia, its history and present condition」
...The Eight Gregorian Tones, with their severalendings; 2...
William Pridden 「Australia, its history and present condition」
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