The Mortality Schedule has been transcribed from images at familysearch.org. The deaths were to be recorded for the 1870 census year which began 01 Jun 1869 and ended 31 May 1870. The earliest deaths recorded in the Story County Death Registers begin later in 1880, so there is no other source of information about many of these deaths. As always, errors can be introduced at many places, beginning with the original enumeration and including the transcription. It is your responsibility to verify the information contained here.
I have included the name of the head of household from Schedule 1 for the family the decendent.