@misc{indiciae36a3737f5b7d,
  title = {Lectures on select subjects in mechanics, hydrostatics, pneumatics, optics, and astronomy — Illustration, BHL page 19819635},
  year = {1839},
  url = {https://www.biodiversitylibrary.org/page/19819635},
  note = {Source identifier: page-19819635}
}