About the author: Thaddeus Xaverius Peregrinus Haenke (October 5, 1761 – November 4, 1816). Bohemian botanist. Member of the Malaspina Expedition which visited the Philippines, from March 4 to December 5, 1792.
About the diary: Published in Malaspina, Alessandro, and Andrew David. 2001. The Malaspina Expedition, 1789-1794: journal of the voyage by Alejandro Malaspina. Works Issued by the Hakluyt Society. 3 (11). London: Hakluyt Society in association with Museo Naval, Madrid. Specifically, v. 3. Manila to Cadiz. 2004 which contain the entries of Haenke (“Haenke’s1 account of his journey from Manila to Bangui, near Cape Bojeador”) from April 14, to June 13, 1792.