Power to prevent harmful use of the postal facilities 268
Exclusion power as an adjunct to other powers 269
State regulations affecting the mails 270
Clause 8. Copyrights and Patents 271
Scope of the power 271
Patentable discoveries 271
Procedure in issuing patents 274
Nature and scope of the right secured 274
Power of Congress over patent rights 275
State power affecting patents and copyrights 276
Trade-marks and advertisements 276
Clause 9. _See_ article III 277
Clause 10. Piracies and felonies 277
Origin of the clause 277
Definition of offenses 277
Extraterritorial reach of the power 278
Clauses 11, 12, 13, and 14. War: Military establishments 279
War power 279
Source and scope 279
An inherent power 280
A complexus of granted powers 281
Declaration of war: When required 281
Prize Cases, The, (1863) 282
Power to raise and maintain armed forces 283
Purpose of specific grants 283
Time limit on appropriations for the army 283
Establishment of the air force 284
Conscription 284
Care of the armed forces 285
Trial and punishment of offenses 285