Jour. de Physique, Chimie et Hist. Nat. 91: 159-160. Aug. 1820 (Read to Roy. Soc. London, June 15, 1820).

–Rev.: Ann. Philos. 16: 55. Summary of Raffles (1820), with other remarks on the internal anatomy of the dugong. Mentions (160) the seasonal occurrence of dugongs at Singapore (mostly during the northern monsoon).