This is a page that appears before a microfilmed copy of declarations of intent for Hamilton County, Ohio between 1848-1851 (Family History Library film 1415117). A big clue that something was different about these records would be the consistent handwriting from one page to the next and the fact that every signature was the same.This might explain why I am having trouble finding the arrival of Peter Bigger on a date that matches the one on his declaration of intent that appears on this roll of microfilm.
Read those introductions--you might realize you've overlooked something.