[D8949AAP], Letter from George J Northrop to Thomas Alva Edison, February 17th, 1889
https://edisondigital.rutgers.edu/document/D8949AAP
→ View document with UniversalViewer → View document on Archive.org → Re-use this digital object via a IIIF manifest
Title
[D8949AAP], Letter from George J Northrop to Thomas Alva Edison, February 17th, 1889
Editor's Notes
I am anxious to learn something about the eletrolytic process of separating and refining copper and would be glad to know what works to return to for information. We know that copper is one of the best conductors of Electricity and that it is not attracted by the magnet like iron and first I would like to devise some way of working and separating copper by a a dry process instead of putting the matter in solution as I understand that they do. I cannot force a manage by Electricity source process by which copper and silber can by of trained please from the matter on separated from toher foreighten material whether it by brother or pulcerised stone or another material.
Author
Recipient
Date
1889-02-17
Type
Subject
Folder/Volume ID
D8949-F
Microfilm ID
126:1001
Document ID
D8949AAP
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University