{"@context":"http://iiif.io/api/presentation/2/context.json","@id":"https://edisondigital.rutgers.edu/iiif/2/D8845AGN/manifest","@type":"sc:Manifest","label":"[D8845AGN], Letter from John Birkinbine to Thomas Alva Edison, December 10th, 1888","thumbnail":{"@id":"https://edisondigital.rutgers.edu/files/medium/D8845AGN/es1071.jpg","@type":"dctypes:Image","format":"image/jpeg","width":758,"height":930},"license":"https://creativecommons.org/publicdomain/zero/1.0/","attribution":"Provided by The Thomas A. Edison Papers at Rutgers University","related":{"@id":"https://edisondigital.rutgers.edu/document/D8845AGN","format":"text/html"},"seeAlso":{"@id":"https://edisondigital.rutgers.edu/api/items/47052","format":"application/ld+json"},"metadata":[{"label":"Title","value":"[D8845AGN], Letter from John Birkinbine to Thomas Alva Edison, December 10th, 1888"},{"label":"Editor's Notes","value":""Owing to the death of one of my assistants and the propriety of my attending the funeral I shall not be able to come over unless it be in the latter part of the week on Saturday I visited the Croton and Lilly Foster mines , near Brewster, N.Y. and have some interesting data to give you concerning the Buchanan Magnetic Separator at the former and the Ball Stamping and the [unclear] Water Jigs at the latter. They claim at the Filly Foster that ore going to the incubator yields but 25% of iron and they get 63% is their incubates leaving over 18% in their tailings. I figure that it takes about severe tons of ore to give one ton of concentrate. ### 7 tons crude ore @ 25% 175 units of iron less 1 ton [unclear] @ 63% [calculations follow]" [TAE marg: "Send to Levor (Livor)]"},{"label":"Author","value":"Birkinbine, John"},{"label":"Recipient","value":"Edison, Thomas Alva"},{"label":"Date","value":"1888-12-10"},{"label":"Type","value":"Letter"},{"label":"Subject","value":["Metals and minerals","Ore milling and separation"]},{"label":"Folder/Volume ID","value":"D8845-F"},{"label":"Microfilm ID","value":"123:1083"},{"label":"Document ID","value":"D8845AGN"},{"label":"URL","value":"https://edisondigital.rutgers.edu/document/D8845AGN"},{"label":"Rights","value":"Thomas Edison National Historical Park"},{"label":"Publisher","value":"Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University"},{"label":"Timestamp","value":"10 December 1888"},{"label":"Has Version","value":"Archive.org Viewer, Microfilm Series Reel 123"}],"sequences":[{"@id":"https://edisondigital.rutgers.edu/iiif/2/D8845AGN/sequence/normal","@type":"sc:Sequence","label":"Current Page Order","viewingDirection":"left-to-right","canvases":[{"@id":"https://edisondigital.rutgers.edu/iiif/2/D8845AGN/canvas/p1","@type":"sc:Canvas","label":"1","thumbnail":{"@id":"https://edisondigital.rutgers.edu/files/medium/D8845AGN/es1071.jpg","@type":"dctypes:Image","format":"image/jpeg","width":758,"height":930},"width":758,"height":930,"images":[{"@id":"https://edisondigital.rutgers.edu/iiif/2/D8845AGN/annotation/p0001-image","@type":"oa:Annotation","motivation":"sc:painting","resource":{"@id":"https://edisondigital.rutgers.edu/iiif/2/231081/full/758,930/0/default.jpg","@type":"dctypes:Image","format":"image/jpeg","width":758,"height":930,"service":{"@context":"http://iiif.io/api/image/2/context.json","@id":"https://edisondigital.rutgers.edu/iiif/2/231081","profile":"http://iiif.io/api/image/2/level2.json"}},"on":"https://edisondigital.rutgers.edu/iiif/2/D8845AGN/canvas/p1"}]}]}]}