botanical collection at the Conservatoire et Jardin botaniques de la Ville de Genève was bequeathed to the city of Geneva. Hassler's library was purchased and is preserved in the National Library of Venezuela in Caracas. Selected publications ( at the Internet Archive.) ( at JSTOR) References External links 1864 births 1937 deaths People from Aarau 19th-century Swiss botanists Swiss ethnographers 19th-century Swiss physicians 20th-century Swiss botanists