Mental faculties 150
Mental hygiene 131
Mental philosophy 140-150
Mental physiology 131
Mesmerism 134
Messiah 232
Metal manufactures 671
Metallurgy 669
Metaphysics 110
Meteorology 551
Methodism 287
Methodology 112
Methods of education 371
Metric system 389
Metrology 389
Mexican war 973, 978
Mexico 978
Mezzotint 776
Michigan 977
Microscopy 578
Middle ages, history, see special countries. 
Middle States 975
Midwifery 618
Military and naval arts 355-359
  engineering 623
  law 347
  science 355
Militia 355
Milk 637
Millennium 236
Millinery 646
Mills, cot., woolen, etc. 677, 678
  paper 676
Mill-work 621
Mind 150
Mineral waters 615
Mineralogy 549
Mines, mining, engineering 628
Miniatures 757
Ministers 250
Ministers lives 922
Minnesota 977
Minstrelsy 811, 821, 831, etc. 
Miracles 231
Miscellany, literary 819
  English 829
  French 849
  German 839
  Italian 859
  Spanish 869
Missions 266
Missions, foreign 267
Mississippi 976
Missouri 977
Mnemonics 154
Modeling 731
Modern architecture 724
Modern costumes, customs 393-399
Modern designs 748
Modern geography 9l3-9l9
Modern Greek 489
Modern history 940-999
Modern philosophy 190
Modern sculpture 735
Mohammedanism 297
Molecular physics 539
Mollusca 594
  paleontology 564
Monarchic institutions 323
Monasteries 271
Monastic orders 271
Money 332
Mongolian language 499
Monitors, iron-clads 359, 699
Monograms 745-748
Monopolies 331
Montana 977
Monuments 718
Moon 523
Moral philosophy 170
Moravians 289
Moravian missions 266
Morea 949
Mortar 693
Mortality 312
Mortgages 343
Mormonism 298
Morocco 964
Morphology 581
Mosaic painting 751
Moslems 297
Mosquitia 979
Mosses 582
Mothers 173
Moths 595, 646
Mouldings 721
Municipal government 342
Mutual aid societies 361
Music 780
Musical composition 781
Musicians 927
Mysteries 133
Mysticism 289
Mythology, comparative 291
Mythology, Greek & Roman 292
Mythology, Norse 293

=Names= 929
Narcotics 615
National costumes 390
National customs 390
Natural history 550-590
Natural philosophy 530
Natural science 500
Natural selection 575
Natural theology 210
Naturalization 343, 325
Nature 500
Naval architecture 699
Naval science 359
Navies 359
Navigation 527, 656
Navigation laws 346
Nebraska 977
Necromancers 133
Needle-work 646, 793
Negroes 573, 326
Nepotism 323
Nestorians 281
Netherlands 949
Neuroptera 595
Neutrals 341
Nevada 977
New Brunswick 972
New England 974
New Granada 986
New Guinea 995
New Hampshire 974
New Jersey 975