Indian Science and Technology in the Eighteenth Century: Some Contemporary European Accounts c12.10

c12.10

‘Now because the values in the first column are doubles of the ascensional differences for one, two and three signs, their halves are the ascensional differences in parts of a *gurry*, supposing N to be in *ongles*; and if each of these halves be multiplied by sixty, the products, namely, 9,9168 N; 17,9784 N; and 21,2580 N will be the same in *puls* of a *gurry*; and if to get each of these nearly, in round numbers, the whole be multiplied by three, and afterwards divided by three, the three products will be 29.75 N; 53.94 N, and 63.77 N which are nearly equal to thirty N; fifty-four N, and sixty-four N respectively; and hence the foundation of the Bramin rule is evident, which directs to multiply the equatorial shadow by thirty, fifty-four, and sixty-four, respectively; and to divide the products by three for the Chorardo in *puls*: and these parts answer to one, two, and three signs of longitude from the true Equinox and therefore the *Ayanongsh*, or Bramin precession of the Equinox, must be added to find the intermediate Chorardo by proportion.’