@misc{indiciae75fc834f01b2,
  title = {Micrographia : containing practical essays on reflecting, solar, oxy-hydrogen gas microscopes; micrometers; eye-pieces, \&c. \&c — Illustration, Page 193},
  year = {1837},
  url = {https://www.biodiversitylibrary.org/page/35099810},
  note = {Source identifier: page-35099810}
}