In addition to the population schedule (the one we usually look at when we research census records on Ancestry.com or Heritagequest.com) there were several years where other schedules were produced. These include schedules for manufacturing, agriculture, and mortality.
Dick Eastman revently wrote an extensive article on the mortality schedule and published it in his online newsletter. In addition to the good information he gives us, there were an extensive number of comments that readers added to the article that were also informative.
The PGS is developing a class on the non-population census schedules....mortality schedules included. Keep your eye our for it on our class list in the fall or spring. You can find the class list at our website (http://www.rootsweb.ancestry.com/~flpgs/index.htm). The class, as all our classes, is free, open to the public, and taught at the Largo Public Library.
You can read Dick's great article at: http://tinyurl.com/32nfyq2