30. PIX CANADENSIS.—CANADA PITCH OR HEMLOCK PITCH. An oleoresin obtained from the North American hemlock spruce, A'bies canaden'sis Carriere. Resembles Pix Burgundica (31) in appearance, properties, and uses; it is somewhat darker red-brown in color and is much more fusible; odor weak, peculiar; taste very feeble. Rosin is a common adulteration.
A Manual of Organic Materia Medica and Pharmacognosy, 1917, was written by Lucius E. Sayre, B.S. Ph. M.