Civil action to criminal action vice versa

From page 368 of Remedial Law and Compendium, Vol. II, 11th Ed.  by Regalado:

Notice that Rule 111, Sec. 5 talks of final judgment in a civil action not being a bar to a criminal action.

In the Note, however, Regalado gave the inverse example -  a finished criminal action not being a bar to a civil action.

Sorry about the link to the book. The bookstore website does not show the Vol. 2.