A digitised scan of the Analytical Institutions is available at Google Books. Hellins signs the Editor's Advertisement 29 September 1801, Potter's-Pury.
John Hellins, 1829–87, clergyman and entomologist: Darwin correspondence project databaseArchived 27 September 2007 at the Wayback Machine, which lists this Hellins as one of Charles Darwin's correspondents. It is apparent that the two John Hellins were related, the first being the grandfather of the second. John Hellins b 1749 (wife Anne Brock) was vicar of Potterspury Northants, where one William Brock Hellins, also to become a clerk in holy orders, was born in 1798. John Hellins the entomologist was William's son, born in Bow, Devon c1829 (info taken from GRO vital records www.freebmd.org.uk, and census records for 1841–1851).
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. An early scientific paper was: "Theorems for Computing Logarithms." By the Rev. John Hellins; Communicated by the Rev. Nevil Maskelyne, D. D., F. R. S. and Astronomer Royal,in Philosophical Transactions Series I,(1780), volume 70, pages 307–317 [Referred to by Smithsonian/NASA ADS Astronomy Abstract Service.
John Hellins, 1829–87, clergyman and entomologist: Darwin correspondence project databaseArchived 27 September 2007 at the Wayback Machine, which lists this Hellins as one of Charles Darwin's correspondents. It is apparent that the two John Hellins were related, the first being the grandfather of the second. John Hellins b 1749 (wife Anne Brock) was vicar of Potterspury Northants, where one William Brock Hellins, also to become a clerk in holy orders, was born in 1798. John Hellins the entomologist was William's son, born in Bow, Devon c1829 (info taken from GRO vital records www.freebmd.org.uk, and census records for 1841–1851).
