An act reinstating the geological survey was approved.

The evidence

• “Hall Was made principal of the commission. The survey was interrupted bya repeal, March 21, 1862, of previous laws promoting it. However, to complete the survey, the matter was reinstated by the act of this legislature, approved March 29, the governor, under that act, appointing as chief geologist Increase A.”

  1879-history-of-rock-county/02-wisconsin-as-a-state.md, PDF p. 95 / book p. 99

  Butterfield, C. W., et al. The History of Rock County, Wisconsin: its early settlement, growth, development, resources, etc. Chicago: Western Historical Company, 1879. Cornell University Library via the Internet Archive, archive.org/details/cu31924028871585.

  Grade A: Found on a page of one of our sources