Wrote Letter L-195 of sometime in 1688 to Robert Boyle, now lost

January 1, 1688
Standard reference information
Collected Letters volume: 

This letter is known only by reference in another source.

M. Hunter et al., eds., The Correspondence of Robert Boyle, v. 6, p. 245:

“Lost letters dating from 1688 are as follows: … No. 263 ‘Msr Leeuwenhoek’.”

L.’s previous letter to British chemist and Royal Society founding member Boyle is Letter L-191 of 6 August 1687, in this volume. His next and last of the six unanswered letters that L. wrote to Boyle is Letter L-203 of 12 January 1689,