Why and where they are built—Official Superintendence—Light Money. CHAPTER XXIX. LETTERS OF MARQUE AND REPRISAL 316 Objects of Privateering—Immorality and injustice of it. CHAPTER XXX. NAVY AND MARINE HOSPITALS 318 The purpose of those institutions—Their means of support—Their location. CHAPTER XXXI. DEPARTMENT OF THE INTERIOR 319 History of this department—Secretary of the Interior—Bureaus of the department—List of Secretaries. CHAPTER XXXII. PUBLIC LANDS 322 How the government obtained them—What disposition is made of them—Land offices—Sale of Lands—Pre-emption—Bounty Lands—Homesteads—School Lands. CHAPTER XXXIII. HOW TO SECURE PUBLIC LANDS 326 Pre-emption Laws—Land Warrants—Soldiers’ Homestead Laws—List of Land Offices. CHAPTER XXXIV. PATENTS 336 Patent office—Commissioner of Patents—Mode of obtaining a Patent. CHAPTER XXXV. PENSIONS 339 The object of Pensions—Pension office—Amount of Pensions—How paid—Pension Laws of various dates. CHAPTER XXXVI. INDIAN AFFAIRS 351 Aboriginal inhabitants—Mode of acquiring their lands—Indian Policy—Reservations—Annuities—Agents—Indian Territory—Condition and number of Indians—Their probable extinction. CHAPTER XXXVII. CENSUS BUREAU 355 How the census is taken—Value of census statistics—Tables of Population. CHAPTER XXXVIII. DEPARTMENT OF AGRICULTURE 357 The objects of this department—Commissioner of Agriculture—Buildings and grounds—Extent of information collected and circulated—Value of this department. CHAPTER XXXIX. POST OFFICE DEPARTMENT 360 Postmaster General—Various Bureaus—Extent of organization—Its remarkable vigor and success—List of Postmasters General. CHAPTER XL. RATES OF POSTAGE 365 Letters—Papers—Packages—Foreign Rates. CHAPTER XLI. REGISTERED AND DEAD LETTERS 368