Specific heat of some calcium chloride solutions between -35° and 20° C
A 1910 technical report from the National Bureau of Standards measuring the specific heat of calcium chloride solutions at low temperatures, written for physicists and instrument makers. Line engravings show Wheatstone bridge circuits with zigzag resistors and galvanometer dials, plus sectioned calorimeters, coiled cooling tubes, and hatched insulation packing — clean stock for diagrammatic and laboratory-themed work.
