At head of title: Laboratory of the Inland Revenue Department. Ottawa, Canada.
Original issued in series: Bulletin / Canada. Inland Revenue Dept. Laboratory ; numbers 220.
Chiefly tables.
Signed and dated: A. McGill. Ottawa, December 7, 1910.
Filmed from a copy of the original publication held by the National Library of Canada. Ottawa : Canadian Institute for Historical Microreproductions, 1998.