The principles upon which rests the right to enact penal ordinances is thus stated: (1) Unless forbidden by the constitution, the legislature can clothe municipal govern- ment with power to prohibit and punish any act made penal by the state laws, when done within the municipal limits. (2) Such an ordinance is not invalid, merely because it prescribes the same penalties as the state law for the commission or omission of the same act. (3) It is no valid objection to such an ordinance, that the offender may be tried and punished for the same act under both the ordinance and the state law. (4) A conviction or acquittal by the municipal courts, under such an ordinance, is no bar to a prosecution under the state law. (5) Such an ordinance is not invalid, merely because the trial thereunder is with- out a jury. (6) Nor is it invalid, because it excepts from its operation certain busi- ness pursuits that are not excepted from the operation of the state law on the same subject; 34 Fla. 440. To the same effect is id. 504. See 1 Am. L. Reg. & Rev. N. 8. 669, 869. Ordinances must not only not conflict with constitutional or general statute law, but they must be reasonable. It is, how- ever, said that what may be reasonable un- der ordinary circumstances, as a prohibi- tion against driving on the street at a greater speed than six miles an hour, would be unreasonable and void as applied to the members of a salvage corps or fire patrol responding to an alarm; 64 Minn. 287. An ordinance providing that "no person shall on any street or public place, or on land adjacent thereto, sing or recite any profane or obscene song or ballad, or use any pro- fane or obscene language," was held un- reasonable and therefore invalid; [1896] 1 Q. B. 290. It is suggested that the real ground of objection in this case was that the words "or on land adjacent thereto," were too wide, and that the other objection alone ought to be untenable because the use of profane or obscene language necessarily implies annoyance; 35 Am. L. Reg. N. S. 327. But an ordinance which conforms to a definite statutory grant of power cannot be set aside as unreasonable; 38 Atl. Rep. (N. J.) 857. A statutory power to make ordinances regulating trade does not war- rant one making it unlawful to carry on a lawful trade in a lawful manner; [1896] Α. C. 88. Municipal ordinances must be specific and definite, and they will not be construed as forbidding an act by implication; 7 Mart. 486; and, like a statute, they may be valid in some of their provisions and in- valid as to others; 84 Ala. 17; 98 id. 134; but where the invalid provisions are in- separably connected with the valid ones, the ordinance is void; 54 N. J. L. 75; 49