- unit, 324;
- velocity, 535, 560, 561;
- science of, 538;
- total reflection, 650;
- waves of, 637;
- classification of, 731.
- Lighthouses, Babbage on, 194.
- Limited identities, 42;
- inference of 59.
- Lindsay, Prof. T. M., 6, 21.
- Linear variation, 474.
- Linnæus on synopsis, 712;
- genera and species, 725.
- Liquid state, 601, 614.
- Locke, John, on induction, 121;
- origin of number, 157;
- on probability, 215;
- the word power, 221.
- Lockyer, J. Norman, classification of elements, 676.
- Logarithms, 148;
- errors in tables, 242.
- Logic, etymology of name, 5.
- Logical abacus, 104.
- Logical alphabet, 93, 116, 173, 417, 701;
- table of, 94;
- connection with arithmetical triangle, 189;
- in probability, 205.
- Logical conditions, numerical meaning of, 171.
- Logical machine, 107.
- Logical relations, number of, 142.
- Logical slate, 95.
- Logical truths, certainty of, 153.
- Lottery, the infinite, 2.
- Lovering, Prof., on ether, 606.
- Lubbock and Drinkwater-Bethune, 386, 395.
- Lucretius, rain of atoms, 223, 741;
- indestructibility of matter, 622.
- M
- Machine, logical, 107.
Table of Contents
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