- his rules of philosophising, 625;
- fluxions, 633;
- theory of sound, 636;
- negative density, 642;
- rays of light having sides, 662.
- Newtonian Method, 581.
- Nicholson, discovery of electrolysis, 530.
- Ninth Bridgewater Treatise quoted, 743, 757.
- Nipher, Professor, on muscular exertion, 490.
- Noble, Captain, chronoscope, 308, 616.
- Nomenclature, laws of botanical, 727.
- Non-observation, arguments from, 411.
- Norwood’s measurement of a degree, 272.
- Nothing, 32.
- Number, nature of, 153, 156;
- concrete and abstract, 159, 305.
- Numbers, prime, 123;
- of Bernoulli, 124;
- figurate, 183;
- triangular, &c., 185.
- Numerical abstraction, 158.
- O
- Observation, 399;
- mental conditions, 402;
- instrumental and sensual conditions, 404;
- external conditions, 407.
- Obverse statements, 144.
- Ocean, depth of, 297.
- Odours, 732.
- Oersted, on electro-magnetism, 530, 535.
- Or, meaning of, 70.
- Order, of premises, 114;
- of terms, 33.
- Orders of combinations, 194.
- Original research, 574.
- Oscillation, centre of, 364.
- Ostensive instances, 608.
- Ozone, 663.
Table of Contents
INDEX.
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