Simon de la Loubère
Mission to Siam
Simon de la Loubère led an embassy to Siam (modern Thailand) in 1687 (the "La Loubère-Céberet mission"). The embassy, composed of five warships, arrived in Bangkok in October 1687 and was received by Ok-khun Chamnan. de la Loubère returned to France on board the Gaillard on 3 January 1688, accompanied by the Jesuit Guy Tachard, and a Siamese embassy led by Ok-khun Chamnan.
Upon his return, de la Loubère made a precise description of his travels, as he had been requested by Louis XIV, published under the title Du Royaume de Siam:
"It was by the orders, which I had the honours to receive from the King upon leaving for my voyage to Siam, that I observed in that country, as exactly as possible, all that appeared to be the most singular."—Du Royaume de Siam, Simon de la Loubère.
De la Loubère was a friend of the German scientist Gottfried Leibniz, and once wrote that he had "no greater joy than (to discuss) philosophy and mathematics" with him (22 January 1681 correspondence).
De la Loubère also brought to France from his Siamese travels a very simple method for creating n-odd magic squares, known as the "Siamese method" or the "de la Loubère method", which apparently was initially brought from Surat, India by another Frenchman by the name of M. Vincent, who was sailing on the return ship with de la Loubère.
Simon de la Loubère is also famous for making one of the earliest account of a parachute following his embassy to Siam. He reported in his 1691 book that a man would jump from a high place with two large umbrellas to entertain the king of Siam, landing into trees, rooftops, and sometimes rivers.
- Du Royaume de Siam, 1691 Full text in French or Thai translation
- Traité de l'origine des jeux floraux de Toulouse (1715)
- De la Résolution des équations, ou de l'Extraction de leurs racines, 1732 Full text
- Smithies, p.2
- Smithies, p.3
- Distant Lands and Diverse Cultures: The French Experience in Asia, 1600-1700 By Glenn Joseph Ames, Ronald S. Love Page 181 
- Smithies, p.59
- Distant Lands and Diverse Cultures: The French Experience in Asia, 1600-1700 By Glenn Joseph Ames, Ronald S. Love, Page 194 
- Mathematical Circles Squared" By Phillip E. Johnson, Howard Whitley Eves, p.22
- CRC Concise Encyclopedia of Mathematics By Eric W. Weisstein, Page 1839 
- The Zen of Magic Squares, Circles, and Stars By Clifford A. Pickover Page 38 
- A new historical relation, Tome II, p.228
- Parachuting: The Skydiver's Handbook Dan Poynter, Mike Turoff p.86
- Encyclopedia of military technology and innovation Stephen Bull p.200 
- A system of aeronautics John Wise p.57
- Smithies, Michael (1999), A Siamese embassy lost in Africa 1686, Silkworm Books, Bangkok, ISBN 974-7100-95-9