2 (1945). Nashville,
C. & St. L. Ry. _v._ Browning, 310 U.S. 362 (1940).

[1095] Sioux City Bridge Co. _v._ Dakota County, 260 U.S. 441, 446
(1923).

[1096] Hillsborough _v._ Cromwell, 326 U.S. 620, 623 (1946).

[1097] St. Louis-San Francisco R. Co. _v._ Middlekamp, 256 U.S. 226, 230
(1921).

[1098] Memphis & C.R. Co. _v._ Pace, 282 U.S. 241 (1931).

[1099] Kansas City Southern R. Co. _v._ Road Improv. Dist., 256 U.S. 658
(1921); Thomas _v._ Kansas City Southern R. Co., 261 U.S. 481 (1923).

[1100] Road Improv. Dist. _v._ Missouri P.R. Co., 274 U.S. 188 (1927).

[1101] Branson _v._ Bush, 251 U.S. 182 (1919).

[1102] Columbus & G.R. Co. _v._ Miller, 283 U.S. 96 (1931).

[1103] Buck _v._ Bell, 274 U.S. 200, 208 (1927).

[1104] Classifications under police regulations have been held valid in
the following situations:

_Advertising:_ discrimination between billboard and newspaper
advertising of cigarettes, Packer Corp. _v._ Utah, 285 U.S. 105 (1932);
prohibition of advertising signs on motor vehicles, except when used in
the usual business of the owner, and not used mainly for advertising,
Fifth Ave. Coach Co. _v._ New York, 221 U.S. 467 (1911); prohibition of
advertising on motor vehicles except notices or advertising of products
of the owner, Railway Express Inc. _v._ New York, 336 U.S. 106 (1949);
prohibition against sale of articles on which there is a representation
of the flag for advertising purposes, except newspapers, periodicals and
books; Halter _v._ Nebraska, 205 U.S. 34 (1907).

_Amusement:_ prohibition against keeping billiard halls for hire, except
in case of hotels having twenty-five or more rooms for use of regular
guests. Murphy _v._ California, 225 U.S. 623 (1912).

_Barber shops:_ a law forbidding Sunday labor except works of necessity
or charity, and specifically forbidding the keeping open of barber
shops. Petit _v._ Minnesota, 177 U.S. 164 (1900).

_Cattle:_ a classification of sheep, as distinguished from cattle, in a
regulation restricting the use of public lands for grazing. Bacon _v._
Walker, 204 U.S. 311 (1907). _See also_ Omaechevarria _v._ Idaho, 246
U.S. 343 (1918).

_Cotton gins:_ in a State where cotton gins are held to be public
utilities and their rates regulated, the granting of a license to a
cooperative association distributing profits ratably to members and
nonmembers does not deny other persons operating gins equal protection
when there is nothing in the laws to forb