Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
April 17 - Friday.
Called on Mr. F. C. Oshk at the U.S.S.
To study their methods of cutting rock.
They have three grinding machines, one polishing
disk, one hand saw, and one small diamond
saw.
Grinding drills and machines are made
by J. E. Hurley 12. This are between 13-14 in.
Price of a single machine about $ 80 00
Plates will be smaller than 13