Any person, sui juris, may delegate to another in authority to act for him in a mat- ter which is lawful and otherwise capable of being delegated; Comyns, Dig. Attorney, c. 1; 9 Co. 75b; Story, Ag. § 6. When a bare power or authority has been given to another, the latter cannot, in gen- eral, delegate that authority, or any part of it, to a third person, for the obvious rea- son that the principal has relied upon the intelligence, skill, and ability of his agent, and cannot have the same confidence in a stranger; Story, Ag. § 13; 2 Kent 633; Broom, Leg. Max. 839; 5 Pet. 390; 3 Stor. 411, 425; 1 McMull. 453; 15 Pick. 303, 307; 26 Wend. 485; 11 G. & J. 58; 5 Ill. 127, 133; 35 W. Va. 300; 62 Hun 369; 2 Misc. Rep. 397. A power to delegate his authority may, however, be given to the agent by express terms of substitution; 1 Hill 505. And some- times such power is implied, as in the fol- lowing cases: First, when, by the law, such power is indispensable in order to accom- plish the end proposed: as, for example, when goods are directed to be sold at auc- tion, and the law forbids such sales except by licensed auctioneers ; 6S. & R. 386. Second, when the employment of such substitute is in the ordinary course of trade: as, where it is the custom of trade to employ a ship- broker or other agent for the purpose of procuring freight and the like; 2 M. & S. 301; 2 B. & P. 438; 3 Johns. Ch. 167, 178; 6 S. & R. 386. Third, when it is understood by the parties to be the mode in which the particular thing would or might be done; 3 Chit. C. L. 206; 9 Ves. 234, 251, 252; 1 M. & S. 484; 2 id. 301, 303, note. See 53 Fed. Rep. 936. Fourth, when the powers thus delegated are merely mechanical in their nature; 1 Hill 501; Sugd. Pow. 176. As to the form of the delegation, for most purposes it may be either in writing, not under seal, or verbally without writing; or the authority may be implied. When, how- ever, the act is required to be done under seal, the delegation must also be under seal unless the principal is present and verbally or impliedly authorizes the act; Story, Ag. § 51; Mech. Ag. 81; 5 Cush. 483. Judicial power cannot be delegated; 3 Brev. 500; 112 N. C. 141; a statute author- izing an attorney to sit in the place of a judge who was disqualified, by reason of prejudice or interest, is void; 39 Wis. 390; S. Č. 20 Am. Rep. 50. See 3 Dutch. 622; Cooley, Const. Lim. 117. Legislative power cannot be delegated by the legislature to any other body or author- ity; 62 Me. 62, 451; 43 Tex. 41; 72 Pa. 491; 45 Mo. 458; 26 Vt. 362; 4 Harring. 479; 8 N. Y. 483; Cooley, Const. Lim. 141; 45 Fed. Rep. 178; 50 id. 406; 47 Mo. App. 125; see 143 U. S. 649; but the taking effect of a statute may be made to depend upon some subsequent event; 7 Cra. 382; 60- Me. 356; 23 Md. 449; 42 Conn. 583; 43 Iowa 252. The grant by congress to the secretary of war prescribing rules for the use of canals owned or operated by the government is not a delegation of legislative power, and the rules prescribed by him have the force of law and persons violating the same are subject to criminal punishment therefor; 74 Fed. Rep. 207. The question of the adop- tion or rejection of a general law cannot be referred to the vote of the people. It is usual, however, to confer certain legisla- tive functions upon muncipal corporations, and this practice has been constantly upheld. The state government may delegate to a municipal corporation part of its own powers, but these powers cannot be dele- gated by the corporation, unless the author- ity to delegate is specially granted by the legislature, nor can the corporation divest itself of the discretion vested by the statute; 44 La. 809. Acts (commonly called local-option laws) permitting the people of a locality to ac- cept or reject for themselves particular police regulations, have been upheld as con- stitutional; 72 Pa. 491; s. c. 13 Am. Rep. 716; 119 Mass. 199; 42 Ind. 547; contra, 6 Pa. 507; 4 Harring. 479; 33 Ia. 134; s. C. 11 Am. Rep. 115; 62 Mo. 168. See Cooley, Const. Lim. 150; 60 Conn. 97.