John Chamberlayne wrote to Hans Sloane about difficulties translating Leeuwenhoek's "ungrammatical language"

October 15, 1708

British Library, Sloane MS 4041, f. 215

I return to you Mr Leeuwenhoeks letter as wel translated as I can, but indeed 't is a burden almost too hard for me to bear, because I find few of his own Countrymen can understand his ungrammatical language.