Appendix B

The Volume of Overseas Emigration

Note — These statistics are taken from the Census of Ireland, 1951, part vi, p. iv. They almost cetainly fall short of the true totals, though the margin of error may not be very great. No allowance was made for stowaways, illegal embarkations or illegal sailing, although there are many references to these practices. Moreover, the returns assume that only 90% of the emigration from Liverpool (by far the most important of the embarkation ports) was Irish in origin. This was a distinct underestimate for the years 1845-50, though it may have been an onverestimate for the years 1852-5, when the German emigration from Liverpool appears to have been considerable. We should note, too, that no account was taken of Irish emigration form the Clyde until 1850, despite the practice of Ulster and North Connacht emigrants of embarking at Glasgow or Greenock. To allow for these ommissions we should perhaps add something like 5% to the annual totals.

10^th rep. C.L.E.C., 5, {1204}, H.C. 1850 xxiii; 11^th rep. C.L.E.C., 1, {1383}, H.C. 1851 xxii.

Ireland’s Population Size From the Census of 1821 to the Census of 1971

Source: Robert E. Kennedy, Jr., “Irish Emigration, Marriage, and Fertility” (PhD Dissertation, University of California, Berkeley, 1967), p. 4; and The Census of Population, 1971, Preliminary Report.

Annual Irish Immigration to the United States, 1831-1860

Source: U.S. Department of Commerce, Bureau of the Census, Historical Statistics of the United States: Colonial Times to 1957, p. 57.

Irish Immigration to the United States by Decade, 1820-1970

Source: U.S. Department of Commerce, Bureau of the Census, Historical Statistics of the United States: Colonial Times to 1957, (Washington, D.C.: Government Printing Office, 1960), pp. 56-57, and Statistical Abstract of the United States: 1971 (Washington, D.C.: Government Printing Office, 1971), p. 92.