Municipal Corporations—Charter—Power op Legislature.—Under the constitution, the legislature has no authority to make any alteration or amendment to a city charter, but its sole power is to ratify or reject it.

Id.—Date op Taking Effect of Charter—Eight to Provide in Charter.—A city charter may provide that some of its provisions shall take effect on a date other than the date of its approval by the legislature.

Id.—Construction of Beservoir—Part of Water System—Municipal Affair.—The construction of a reservoir by a city upon its own land and to be used for the benefit of the inhabitants thereof as a part of its water system is a municipal affair, within the provision of section 8 of article XI of the constitution.

Id.—Construction of Beservoir in City of Vallejo—Charter Governing Work.—A contract for the construction of a reservoir in the city of Vallejo upon its own land for the benefit of the city as a part of its water system, which was entered into on the nineteenth day of June, 1911, is governed by the charter of 1899 (Stats. 1899, p. 370), and not by the charter of 1911 (Stats. 1911, p. 1422), since by the express provision of section 128 of the latter instrument, it did not become effective for purposes other than the election of officers until July 1, 1911, notwithstanding it was approved by the legislature on March 11, 1911.

Id.—City Contracts Under Vallejo Charter of 1899—Public Work Act of 1897 Inapplicable.—In view of the fact that the charter of 1899 of the city of Vallejo (Stats. 1899, p. 370), provides a complete scheme for the letting of contracts, including the terms and conditions under which such contracts are to be let, including also the giving of a bond by the contractor for the faithful performance of the1'contract, it follows that the act of March 27, 1897, or the amendatory act of May 1, 1911, relating to the giving of a bond to protect materialmen and laborers employed by the contractor on public work, has no application to contracts let under such charter.