sentences:  His "Thesis de Calore Corporis Humani hygraulico" is the only work he published.He was much attached to the science of botany, which led him to seek the society of Carl Linnaeus, who was on a year-long visit to Boerhaave at Leiden.No fewer than 47 letters of Bartsch to Linnaeus from 1736 and 1737 survive, and Bartsch assisted Linnaeus with the publication of "Flora Lapponica".