1920 Article Portable Coalometer Coal Pile Leakage Instrument A. W. Browne SCA3 XGRA1 silver screen

silver screen

"House in Yorkshire

This is an original 1886 black and white wood engraving of the Trollhättan waterfalls on the Gota River in Sweden (Sverige)

This is an original 1904 black and white print ad for Sorosis Shoes for children --and dolls

Photography by Harriet Chalmers Adams

1920 Article Portable Coalometer Coal Pile Leakage Instrument A. W. Browne SCA3 XGRA1 silver screenThis is an original 1920 one page article (one single sided page), "Detecting and Preventing Leakage in the Soft Coal Pile" by R. P. Nichols featuring an image of the details and installation of the Coalometer, an instrument developed from a joint intervention of Mr. A. W. Browne, Professor of Chemistry at Cornell University, and one of the America's leading scientists. This instrument detects heat losses in the soft coal pile. CONDITION This 91+ year