- P
- π, value of, 234, 529.
- Pack of cards, arrangement of, 241.
- Paley on design, 762, 763.
- Parallax, of stars, 344;
- of sun, 560.
- Parallel forces, 652.
- Paralogism, 62.
- Parity of reasoning, 268.
- Partial identities, 40, 55, 57, 111;
- induction of, 130.
- Particular quantity, 56.
- Particulars, reasoning from, 227.
- Partition, 29.
- Pascal, 176;
- arithmetical machine, 107;
- arithmetical triangle, 182;
- binomial formula, 182;
- error in probabilities, 213;
- barometer, 519.
- Passive state of steel, 659.
- Pedesis, or molecular movement of microscopic particles, 406, 612.
- Peirce, Professor, 23;
- on rejection of observations, 391.
- Pendulum, 290, 302, 315;
- faults of, 311;
- vibrations, 453, 454;
- cycloidal, 461.
- Perfect induction, 146, 149.
- Perigon, 306.
- Permutations, 173, 178;
- distinction from combinations, 177.
- Personal error, 347.
- Photometry, 288.
- Physiology, exceptions in, 666.
- Planets, conjunctions of, 181, 187, 657;
- discovery of, 412;
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