Home / Tag fortune /

Scientific American 1902-02-15

ScientificAmerican1902-02-15.jpg Motion Picture 1943-08ThumbnailsSunday Magazine 1907-12-15-01Motion Picture 1943-08ThumbnailsSunday Magazine 1907-12-15-01Motion Picture 1943-08ThumbnailsSunday Magazine 1907-12-15-01Motion Picture 1943-08ThumbnailsSunday Magazine 1907-12-15-01Motion Picture 1943-08ThumbnailsSunday Magazine 1907-12-15-01

Assaying gold and silver bullion at the new york Assay Office. Weighing Room. Melting. Pressing the assay sample. Muffle furnaces for fire assay. Humid assay for silver. Extracting the silver with boiling acid.



Source: Steve Kirch, collector, and creator of a great website about SCIENTIFIC AMERICAN in the past

Restoration by: magscanner