Wrote Letter L-384 of 1701-04-08 to the mayors of Delft about his calculation of the difference between the coal measures of Delft and Rotterdam and how to calculate the volume of a pyramid
Date:
April 8, 1701
Text of the letter and report in the original Dutch and in English translation from Alle de Brieven. The Collected Letters at the DBNL - De Digitale Bibliotheek voor de Nederlandse Letteren
Leeuwenhoek wrote this letter to N.N. (Burgomasters and governors of the City of Delft) about his calculation of the difference between the coal measures of Delft and Rotterdam and how to calculate the volume of a pyramid.
Below is the cover letter to the whole report, which was mostly calculations to show the mayors how Rotterdam's coal measure differed from Delft's.