...It is worthy of remark that theOld Style Gregorian calendar is maintained among them, withcorruptions of Latin names... 
Sir James George Frazer 「Balder The Beautiful, Vol. I.」
...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'」
...After repeated failures he at lengthcompleted a 5½-foot Gregorian reflector, and with this instrumentmade his first survey of the heavens...
Thomas Orchard 「The Astronomy of Milton's 'Paradise Lost'」
...The Gregorian had thus the sentimentaladvantage of being pointed directly at the object...
Cecil G. Dolmage 「Astronomy of To-day」
...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」
...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」
...The agreement between thecalendar and nature has thus been fairly perfect, since theestablishment of the Gregorian Calendar in 1582...
Camille Flammarion Frances A. Welby 「Astronomy for Amateurs」
...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」
...What is the correspondingdate in the Gregorian calendar?...
George C. Comstock 「A Text-Book of Astronomy」
...He was determined to see for himself all the astronomical wonders; andthere being a small Gregorian reflector in one of the shops, he hiredit...
Oliver Lodge 「Pioneers of Science」
...The Eight Gregorian Tones, with their severalendings; 2...
William Pridden 「Australia, its history and present condition」
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