Data for 12 crops, 1927 to 1938, have been used to examine the protein contents of Grades 1, 2, and 3 Northern drawn from the northern and north-western area, and from the central and southern area, of Western Canada. The boundary between the areas was taken as that dividing zones averaging over and under 13% protein. Grades 1, 2, and 3 Northern from the southern area averaged 14.2, 14.0, and 14.0% protein; those from the northern area averaged 12.8, 12.0, and 11.6% protein; and the average difference between zones for all three grades was 2.0%. The reasons for the increase in the spread between zones with decreasing grade are discussed. For the 12 yr. period, the average protein content of shipments of Western Canadian wheat is estimated as 13.5%. If no wheat had been shipped from the northern zone the average protein level would have been increased by about 0.5 per cent.
XXX.—Shackleton Antarctic Expedition, 1914–1917: Depths and Deposits of the Weddell Sea
