François-Étienne de La Roche explained

François-Étienne de La Roche (or Delaroche) (9 December 1781 – 23 December 1813) was a Genevan physician, naturalist, chemist, botanist and ichthyologist.

Early life and family

He was born in Geneva to Marie Castanet and Daniel de La Roche, and was the youngest of three children. His father was an Edinburgh-trained physician, botanist, and medical translator from Geneva, who was friends with Louis Odier, the Swiss physician, medical translator and publisher. After working in Geneva, the family moved to Paris where de La Roche senior was physician to the Duke of Orléans, and later at the health centre.[1] [2] [3]

Career

De La Roche studied at the Faculty of Medicine at the University of Paris where, in 1806, he completed his medical thesis on the effects of strong heat on animal husbandry.[4] He became a physician at L'Hôpital Necker.[5]

He collected and studied fish on an expedition to the Spanish Balearic islands between October 1807 and May 1808; he observed and described new or little-known species from that location and made a study of the swim bladders of fish.[6] [7] [8] [4]

In 1811, he carried out work on the Specific Heat of Gases in collaboration with the French physicist and chemist Jacques Étienne Bérard,[9] work which won a prize from the Paris Academy of Science in 1812. Also in 1812, he read a paper at the Institut de France titled Dissertation on the effect that air temperature has on the phenomenon of respiration.[4]

As an original researcher, his name is attached (as de La Roche or Delaroche) to the plant genus Alepidea and a number of different marine species.[10] [11] [12] [13] [14] [15] [16]

Death

De La Roche became infected with typhus bacteria and died in 1813, only just aged 32, during the same epidemic that his father also succumbed to. Both were interred in the family grave in the 25th division of Père-Lachaise Cemetery in Paris.[4] [5]

Notes and References

  1. Book: Taxonomic literature : a selective guide to botanical publications and collections with dates, commentaries and types . Stafleu. Frans A.. Cowan. Richard S.. 613. Bohn, Scheltema & Holkema. Utrecht. 2. 1988. 1 . 9789031302246 .
  2. Web site: Delaroche, Daniel (1743–1812), son épouse Marie Castanet, leurs enfants Michel, Alphonsine et Etienne François, et leurs proches. correspondancefamiliale.ehess.fr. 20 December 2017.
  3. Web site: Société Genevoise de Généalogie. www.gen-gen.ch. 20 December 2017.
  4. Book: Dezeimeris. Jean Eugène. Ollivier. Charles Prosper. Raige-Delorme. Jacques. Dictionnaire historique de la médecine ancienne et moderne, ou Précis de l'histoire générale, technologique et littéraire de la médecine, suivi de la bibliographie médicale du dix-neuvième siècle, et d'un répertoire bibliographique par ordre de matières. 1834. Paris. 38.
  5. Web site: DE LA ROCHE François Etienne (1781–1813). www.appl-lachaise.net. 20 December 2017. 13 September 2018. https://web.archive.org/web/20180913112129/https://www.appl-lachaise.net/appl/article.php3?id_article=5095. dead.
  6. Suite du mémoire sur les espèces de poissons observées à Iviça [Ibiza]. Observations sur quelques-uns des poissons indiqués dans le précédent tableau et descriptions des espèces nouvelles ou peu connues. Annales du Muséum National d'Histoire Naturelle. Delaroche. F.E.. 13. 313–361. Paris. 1809.
  7. Observations sur des poissons recueillis dans un voyage aux îles Baléares et Pythiuses. Annales du Muséum National d'Histoire Naturelle. Delaroche. F.E.. 13. 98–122. Paris. 1809.
  8. Observations sur la vessie aérienne des poissons. Annales du Muséum National d'Histoire Naturelle. Delaroche. F.E.. 14. 184–217, 245–289. Paris. 1809.
  9. Mémoire sur la détermination de la chaleur spécifique des différents gaz. de La Roche. François-Étienne. Bérard. Jacques Etienne. Annales de chimie. 1813.
  10. Delaroche. François-Étienne. Eryngiorum nec non generis novi alepideae historia. Chez Deterville. Paris. 70. 1808.
  11. Web site: Apiaceae Alepidea F.Delaroche. www.ipni.org. 20 December 2017.
  12. Web site: Eryngium comosum F. Delaroche. www.gbif.org. 20 December 2017. 29 December 2019. https://web.archive.org/web/20191229123645/https://www.gbif.org/species/126293376. dead.
  13. Web site: Eryngium comosum Delar.. www.gbif.org. 20 December 2017.
  14. Delaroche. François-Étienne. Histoire du Genre Eryngium. Nouveau Bulletin des Sciences par la Société de Philomathique de Paris. 87–89. 1807.
  15. Delaroche. François-Étienne. Histoire du Genre Eryngium. Nouveau Bulletin des Sciences par la Société de Philomathique de Paris. 106–110. 1809.
  16. Web site: World Register of Marine Species. www.marinespecies.org. 20 December 2017.

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