Salusbury, Thomas, Mathematical collections and translations (Tome I), 1667

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130 m. which I ſee that being reduced from 4 gr. 30 min. to 2 min.
yet nevertheleſſe it elevates not the ſtar to 29.

B DChord1746B D CSine92050B C D4 gr. 30 m.Sine784692050174605523003682064435920527581607193004414
The eleventh rendereth the ſtar to the Authour remote about
13. ſemidiameters, with the Parallax of 55. min. let us ſee,
ducing it to 20 min. whether it will exalt the ſtar: See here the
calculation elevates it to little leſſe than 33. ſemidiameters, the
correction therefore is little leſſe than 35. min. in 55. min.

B DChord19748B D CSine96166B C Do gr. 55 m.Sine1600961661974863932838466467316286549496166325821899056168153656
The twelfth with the Parallax of 1. gr. 36. min. maketh the
ſtar leſſe high than 6. ſemidiameters, reducing the Parallax to
20 min. it carrieth the ſtar to leſſe than 30. ſemidiameters
ſtance, therefore the correction of 1 gr. 16. min. ſufficeth

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