California Statutes and Amendments to Codes, 1895: With Notes of Decisions from Volumes 97 to 104, Inclusive, of California Reports San Francisco, 1895 Page 14, Image 136 available at The Making of Modern Law: Primary Sources.

Penal Code, 1895. §627. Every person who shall use a shotgun of a larger caliber than that commonly known and designated as a number ten gauge, shall be guilty of a misdemeanor. The proof of the possession of said gun in the field, on marsh, bay, lake, or stream, shall be prima facie evidence of its illegal use.