- Date
- 1667.03.25
- Ep
- 40
- Sender
- Benedictus Spinoza, de
- Sent from
- -
- Recipient
- Jarig Jelles
- Received in
- -
- OP NO.
- XLV
- OP PP.
- 533–5v
- NS OP.
- XLV
- NS PP.
- 585–8
Annotations
The lost letter contained a physical illustration depicting non-parallel rays of light issuing from different angles of a distant object that are refracted and reversed by the human eye. Drawing is lost. Printed in OP and NS.