Portsea Island, a small island on the south coast of Hampshire, has on its west side Portsmouth Harbour and on its east side Langston Harbour, and is separated from the mainland on the north by a narrow channel, crossed by several bridges. It is four miles long by from two to three broad, and contains the towns of Portsea and Portsmouth.
Portsea Island,
Chambers's Encyclopaedia, Volume 8: Peasant to Eoumelia, p. 335
Source scan(s): p. 0344