Description | Signed autograph Observations of the sperm of cod, pike, birds; observations of the testicles and sperm of a hare and of a dog; calculations for determining the number of sperms in the milt of a cod Diagram of the testicle of a dog in red chalk is attached Transcribed and translated in 'Alle de brieven van Antoni van Leeuwenhoek', edited, illustrated and annotated by Committee of Dutch Scientists, vol 3, p 3 |
Place origin | Delft, South Holland, (United Provinces) Netherlands |