458. Column 11. Age at Last Birthday.-Enter the age of the person at his last birthday before 12:01 a.m., April 1, 1940. Thus, a person whose 18th birthday occurred on April 8, 1940, should be reported as 17 years of age because that was his age on his last birthday before April 1, 1940. For persons 1 year old and over, this question calls for the age in completed years at last birthday.

459. Ages of Infants.-The entry in col. 11 for children less than a year old should indicate age in completed months, expressed as twelfths of a year. Ask the following question in each household: "Are there any children in this household who were born on or after April 1, 1939?" For each child born after April 1, 1939, ascertain the actual birth date and determine the proper entry for col. 11 by referring to the table showing ages by birth dates at the foot of the schedule. Thus the age of a child born on May 2, 1939, should be entered as 10/12. Note that a child born after 12:01 a.m., April 1, 1940, is not to be enumerated.