You can use this work for any purpose without restriction under copyright law.
Public Domain Mark (PDM) terms and conditions https://creativecommons.org/publicdomain/mark/1.0
Curiositates eroticae physiologiae, or, Tabooed subjects freely treated in six essays, viz : 1. generation. 2. chastity and modesty. 3. marriage. 4. circumcision. 5. eunuchism. 6. hermophrodism, and followed by a closing essay on death. Public Domain Mark