Van Leeuwenhoek's Disease.

http://en.wikipedia.org/wiki/Antonie_van_Leeuwenhoek

Death and Legacy.

By the end of his life, Leeuwenhoek had written approximately 560 letters to the Society and other scientific institutions concerning his observations and discoveries. Even when dying, Leeuwenhoek kept sending letters full of observations to London. The last few also contained a precise description of his own illness. He suffered from a rare disease, an uncontrolled movement of the midriff, which is now named Van Leeuwenhoek's disease.He died at the age of 90, on August 26, 1723 and was buried four days later in the Oude Kerk (Delft).

In 1981 the British microscopist Brian J. Ford found that Leeuwenhoek's original specimens had survived in the collections of the Royal Society of London.They were found to be of high quality, and were all well preserved. Ford carried out observations with a range of microscopes, adding to our knowledge of Leeuwenhoek's work.