- de Meij
- de Molijn
- van den Berch
- Hogenhouck family
- Civic career
- Scientific career
- Delft in Holland
Wrote Letter 5 of 1674-07-06 (AB 9) to Henry Oldenburg
July 6, 1674
Text of the letter 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 Henry Oldenburg about sweat, hair, fat, and tears; improved capillary tubes.
2 ink drawings in the margins of the text.
I have formerly sent you my way of seeing the motion of the Globuls in the Crystallin liquor of the Blood: Having since contrived a more convenient Glass-pipe for that purpose, I cannot but give you and your Curious Friends notice thereof;
A B is a hollow Glass-pipe from B to O, about the thickness of a coarse horse-hair; from O to D, about the thickness of a Pigeons-quil, and the thickness from D to A somewhat slenderer. 'Tis open on both its ends, A and B: Into this pipe I brought some Blood.
A and B are two Globuls of Fat, that are formed first, and the third being a forming, and to be placed between and above A and B, it will take the form of C, and so make up the triangular body F D E. ...
I have lately observ'd, that each buble or globul of Fat consists of more than a thousand small Globuls. Yet I am apt to believe, that those that have not seen the Globuls in Blood, Hair, Bone, &c. will not satisfie themselves about seeing the Globuls in the Globuls of Fat, because of their extraordinary minuteness.