Wrote Letter L-531 of 1716-05-16 to Gerard van Loon about hops from Liege, the structure of hops, its bitter oil, and salt particles from the oil, a comparison with sugar candy, and hop embryos; Leeuwenhoek descended from a family of beer brewers

Date: 
May 16, 1716
Standard reference information
L-number: 
L-531
Leeuwenhoek's number: 
XXII
Collected Letters number: 
325
Collected Letters volume: 
17

Hops from Liege are better than those from the Northern Netherlands. The structure of hops and the lupulin glands which contain a bitter oily substance. salt particles from the oil. Comparison with sugar candy. Embryos from the seeds of hop. L. descended from a family of beer brewers, as was Van Loon.