1 _- 



INDEX TO VOL. I. 



Impulse or impart, 745. 



Inch-meaiure, 692. 



Inclination*. conveying laadt up 818. 



iKliMd plane, 719. 731. 737. 741. 



Inclined plane, a machin. 



Indicator. MI instrument to uoerUin 



power. 846. 867. 

 Indicator. picture of the defect* in the 



Indicator applied to t condensing engine, 



869. 

 Indicator. formuU for finding tbe power, 



868. 



Indicator, its action, 867. 

 Instruments for mechanical drawing, 794. 

 Involute of tbe circle, 890. 

 Iodine rue* in npour at low temperature, 



842. 



Iron ban, their strength, 796. 

 Iron, bran, and *teel, table of friction, 



902. 



Iron (ca*t) column*, their strength, 801. 

 Iron (cut) contracts in cooling from 



the molten itate, 808. 

 Iron (ca*t), data for calculating the 



trength, 797. 



Iron (cast), effects of compressing, 801. 

 Iron (cast) girders, usual section, 808. 

 Iron (cast), often deceptive, 799, 802. 

 Iron, crushing pressure, 802. 

 Iron, experiments as to compression, 802. 

 Iron, malleable, nil*, best section, 808. 

 Iron manufactories, 880. 

 Iron manufacture, steam power for pro- 



ducing blast, 880. 



Iron, table of strength, 797, 801, 810. 

 Iron, table of torsive strength, 814. 

 Iron, tensive and compre*ive difference 



between cast and wrought 809. 

 Iron (wrought), data for calculating the 



strength. 797. 

 Irrigating bjr steam, 880. 

 Irrigation, raising water for 836. 

 Ivory, it* elasticity, 745. 



JACK, tbe, 728. 



Jets, computation of their horisontal 



range, 764. 

 Joint, universal, for coupling shaft*, S84. 



KATR'S determination of the pendulum 



standard, 692. 

 Kepler's hypothesis on tbe motion of 



planets, 690. 



Keys for coupling shafts, 883. 

 Keyway, a rece** for keys, 883. 

 King-post fixed to a beam. 810. 

 kites propelling vehicle* over ice, 822. 

 Knife, a lever, 7I'J. 

 Knot in a wooden post an important 



element of fracture, 801. 



LABODB a* a punishment, 818. 



Labour, its economy is the chief study of 



mechanic*, 77'J. 

 Labour, manual, important observations 



for it* economy, 818. 

 Land-surveys, scales used in drawing 



for, 795. 



Lathe and mandril, 897. 

 Lathe, screw-gearing for the, 897. 

 Lead (cast), data for calculating the 



strength. 797. 



Lead, crushing pressure, 802. 

 Lead, effect of compressing. 801. 

 Lead, table of torsive strength, 814. 

 Leather employed in straps, 887. 

 Leather straps, rales for, '.">:t. 

 Leather, table of friction, 902. 

 Leaves, the teeth of a pinion, 728. 

 Leeway, 821. 

 Length, unit of, 692. 

 Levelling instrument*, 751. 

 Lew, 719, rfwf. 

 Leverage, endless, 727. 



Lever, bell-crank, for converting motion, 



894. 

 Lever, its action, 882. 



I.- v -i -| r. 7s i. 



Lever represented by the masclet, 780. 

 Lifting a load, action of man in, 818. 

 Lift*, hydraulic. 840. 

 Light, the height of atmosphere deduced 



from tbe refraction of, 772 

 Light* to complete drawing* need no 



geometrical projection, "'.'-'. 

 Limestone, compact, crushing force, 802. 

 Lineal measure, 692, 906. 

 Lines, central, in drawings, 791. 

 Link motion in marine and locomotive 



engines, 862. 

 Links of a chain, their shearing strain, 



816. 



Liquid measure, 906. 

 Liquids, different, how to measure their 



gravities, 757. 



Liquids, expansive power of, 842. 

 Load, power of man in carrying a, 819. 

 Loads, bearing and dragging, 819. 

 Lock-up safety-valve, 854. 

 Locomotive, 880. 



Locomotive, boilers employed in, 850. 

 Locomotive described, 866, 880. 

 Locomotive for ordinary roads, 880. 

 Locomotive, friction-break of a, 782. 

 Locomotive, its essentials, 880. 

 Locomotives, D-slide, 806. 

 Locomotives, spring balance of the safety- 

 valve of, 854. 

 Locomotives, their boiler-pressure ranges 



as high as ISOIbs., 853. 

 London, gravity in the latitude of, 747. 

 London, pendulum, length of. at, 747. 

 Louvre. boards of windmills, V'l. 



MACRINIRT cannot create or annihilate 

 force, 857. 



Machinery, driving, 879. 



Machinery for effecting transit and com- 

 munication, 783. 



Machinery for making ropes, cordage, 

 paper, 783. 



Machinery for measuring and calculating, 

 783. 



Machinery for moving fluids, 783. 



Machinery for preparing animal and 

 vegetable products, 783. 



Machinery for preparing mineral pro- 

 ducts, 783. 



Machinery for preparing timber, 783. 



Machinery for raising weights and giving 

 pressure, 783. 



Machinery for textile fabrics, 783. 



Machinery for working metals, 783. 



Machinery, its beauty, on what it depends, 

 782. 



Machinery moved by a weight, 837. 



Machinery moved by springs, 838. 



Machinery of antiquity, 778. 



Machinery, strains to which it may be 

 subjected, 899. 



Machinery, varying tbe speed of, 886. 



Machines are the product* of dynamical 

 mechanics, 799. 



Machines perform their work better than 

 the hand, 819. 



Machines, the velocity of any part is pro- 

 portional to its strain, 883. 



Machinist, what is his object, 779. 



Magic clock, 716. 



Magnetism, a* a source of mechanical 

 power, 842. 



Magnitude of force*, 694. 



Mahogany, data for calculating the 

 strength, 797. 



Man, average power of a, 819. 



Man, his action when standing and walk- 

 ing, 714. 



Man, bow much pressure be can exert by 

 hi* grasp, 819. 



Man, how much weight be can bear and 

 lift. 819. 



Man's muscular force a source of power, 

 7*1. 



Mandril of the lathe, 897. 



Mangle motion, 8'Jfi. 



Man-bole in boilers, 851. 



Manual labour, important observation for 

 it* economy, 880. 



Manufactories generally employ beam- 

 engines, 879. 



Manufactories, power required in, 879. 



Marble, crushing pressure 



Marine engines described , 



Marine engines introduced into manufac- 

 tories, 879. 



Marine steam-boilers, 819. 



Marriotte's law, application of, 846. 



Marriotte's law of gases, 813. 



Marriotte's law of proportion between the 

 volume and pressure of air, 769. 



Mass, explanation of this term, 750. 



Mass, unit of a, 750. 



Mass, denned, 742. 



Material, ita economy is the chief study 

 of mechanics, 779. 



Material, ita disposal to secure strength, 

 809. 



Material particle, C89. 



Materials, crude, machinery for preparing, 

 783. 



Mathematical instruments, 783, 795. 



Matrix of a punching machine, 815. 



Measure of length, 692. 



Measures, English anil French, 692, 905. 



Measuring-machinery, 898. 



Mechanical drawing, 784. 



Mechanical invention not tbe result of 

 accident, 779. 



Mechanical notation proposed by Bahbage, 

 784. 



Mechanical philosophy, 689, el ng. 



Mechanical powers, 719, el ttg. 



Mechanics, a necessary educational know- 

 ledge, 783. 



Mechanics, statical and dynamical. 779. 



Mechanics, their connection with che- 

 mistry, 779. 



Men, muscular power of, 818. 



Menai Straits bridge, 805. 



Mercurial steam-gauge for boilers, 854. 



Mercury, as a means of measuring pres- 

 sure of fluids, 8 1 1 . 



Mercury in the barometer, 7f>9, 8H. 



Mercury, its capillary repulsion, 763. 



Mercury, its density and specific gravity, 

 750. 



Mercury-vapour, proposed engine, 843. 



Meridian, 692. 



Metacentre in a floating body, 758. 



Metacentre, its determination, 7o9. 



Metals as wire become stronger, 



Metals, machinery for working, 783. 



Metre, 692, 906. 



Micrometer screw, 898. 



Mile, 692, 906. 



Mill-dam, 833. 



Mill-shaft, apparatus for shifting, 824. 



Mills, channels for conveying water to, 

 833. 



Mills (tide) (See Tide Mills). 



Mills (wind) (See Windmills). 



Mills worked successively by the same 

 water, 833. 



Mini-nil products, machinery for pre- 

 paring, 783. 



Mining, Watt's engines applied in, 87S. 



Mitre-wheels, 892. 



Moment of forces, 701 . 



Moments, positive and negative, 701. 



Momentum, 742, 745. 



Momentum in machines, 782. 



Momentum of a steam-engine equal to a 

 blow of a 68 Ib. cannon-ball, bU2. 



Momentum of dynamics, 701. 



