What is a "mortality schedule"?
When a census was taken, the enumerators were to collect information on all
persons who had died during the previous 12 months. This information is
included on a mortality schedule.
The U.S. 1850 census was begun 1 June 1850, and was to be completed within five
months. Since Utah didn't receive official word until January,
1851 that the Territory of Utah had been organized by Congress, the
Utah Census was taken prior to 1 July
1851. The 1850 mortality scheduled was to include deaths from
1 June 1849 through 31 May 1850, but because Utah's census was taken late, it
includes deaths through 1 July 1851.
Enumerators of early
census's were not known for their meticulous records. Errors and
omissions were fairly common. If a person was listed, it was likely they
belonged there; but if a person was not listed, the possibility remains that
they were missed -- as deaths were often under-reported.