Henry Clarke

1743 – 1818

• Practical perspective
• The rationale of circulating numbers, with the investigations of all the rules and peculiar processes used in that part of decimal arithmetic
• A new, concise, and correct operation for clearing the apparent distance of the moon from a star or the sun of the effects of refraction and parallax
• Additional remarks on converging series
• Clarke's seaman's desiderata, or, Concise, practical rules for computing the apparent time at sea
• Clarke's seaman's desiderata, or, Concise, practical rules for computing the apparent time at sea, the latitude from double solar altitudes, and the longitude from the lunar observations
• Practical perspective
• Supplement to Professor Lorgna's summation of series
• Tabulæ linguarum
• The rationale of circulating numbers
• The school candidates