State regulation of length of trains 223
Lesson of Southern Pacific Co. _v._ Arizona 225
State regulation of motor vehicles: Valid regulations 226
Invalid State acts affecting motor carriers 227
Transportation agencies 228
Navigation; general doctrine 228
Bridges, dams, ferries, wharves 230
Ferries 231
Telegraphs and telephones 231
Gas and electricity 233
Foreign corporations 234
Miscellaneous 234
Banks and banking 234
Brokers 235
Commission men 235
Attachment and garnishment 235
Statutory liens 235
Police power and the subject matter of commerce 235
Scope of the police power 235
Quarantine laws 236
State inspection laws 237
State prohibition laws: The original package doctrine 238
Oleomargarine and cigarettes 239
Demise of the original package doctrine 240
Curbs on the interstate movement of persons 241
State conservation and embargo measures 242
State conservation and embargo measures: The Milk Cases 244
State conservation and embargo measures: The Shrimp Cases 245
Concurrent federal and State legislation 246
General issue 246