At head of title: Laboratory of the Inland Revenue Department. Ottawa, Canada.
Signed (pages 7): A. McGill.
Dated: Ottawa, September 1, 1908.
Original issued in series: Bulletin / Canada. Inland Revenue Dept. Laboratory ; numbers 160.
Chiefly tables.
"O.H.M.S."
Filmed from a copy of the original publication held by the National Library of Canada. Ottawa : Canadian Institute for Historical Microreproductions, 1998.