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streaks and marks

Rail No. 63.
Old English steel rail. Landore Siemens Steel, 2-72, Naylor & Co., Section 70. Longitudinal streaks in base.
Polished and etched specimen.
E. O. Cockayne – Boston.
(cropped from page)
ex Report of the tests of metals and other materials for industrial purposes made with the United States testing machine at Watertown Arsenal, during the Fiscal Year ended June 30, 1908. 1909
Harvard University copy (Eng 318.81.3), digitized October 1, 2007

This from section "Steel Rails. Views of streaks and marks on longitudinal and cross sections of steel rails, and photomicrographs of thermal cracks and fissures." commences here.
Tabulated data provided for some tests in this volume, but apparently not for this particular series, whose photographs are of exceptional quality.

all tagged Watertown Arsenal.

10 March 2014
tags: marks; steel; streaks; tests; Watertown Arsenal