Leaf beginning "p.90 Watery Matters. The Watery portion of the distillate referred to contains the Naptha and Acetone," written on the verso of a portion of a letter, probably the second half of the letter begun on the verso of item 29

Leaf beginning "p.90 Watery Matters. The Watery portion of the distillate referred to contains the Naptha and Acetone," written on the verso of a portion of a letter, probably the second half of the letter begun on the verso of item 29, Box: 1, Folder: 32. Notes and annotations in 1859 edition of The Manufacture of Photogenic or Hydro-carbon Oils, MS C79. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/382385 Accessed March 19, 2026.