MECHANICS.] 



INDEX TO VOL. I. 



1245 



Slide, D, how its motion i produced by 



rotary movement, 861. 

 Slide-jacket, 856. 

 Slides, adjustment of, 867. 

 Slides in steam-engines, 855. 

 Slips, launching, 783. 

 Slotting machine, methods of moving, 



898. 



Sluices for opening and closing water- 

 channels, 833. 

 Smeaton's air-pump, 776. 

 Smeaton's angles of the sails of a wind- 

 mill, 823. 



Smeaton's pulley, 730. 

 Smelting furnaces, the production of air- 

 blast for, 879. 



Smoke-consuming apparatus, 851. 

 Sole of a bucket in water-wheels, 829. 

 Solid body, how to delineate, 786. 

 Solid measure, 692, 906. 

 Sulids immersed in two fluids, 756. 

 Solids in general attract water, 762. 

 Solids, to find their specific gravity by 



Nicholson's hydrometer, 757. 

 Solway Firth, the tidal current of, 833. 

 Space passed through by a falling body, 



837. 

 Space passed through by a moving body, 



735, et teq. 

 Spade a lever, 719. 



gravity, 750, 755. 

 Spee<J is distance and time, 781. 

 Speed of pulleys, rules for calculating, 886. 

 Sphere filled with fluid, to determine the 



pressure of a, 752. 



Sphere, floating its equilibrium, 759. 

 Sphere, to find its diameter when the 



weight is given, 756. 

 Spheres, projection of the shadows, 793. 

 Spindles, rules to calculate strain on, 814. 

 Spinning machinery, 783. 

 Spirits, instrument to ascertain their 



strength, 757. 

 Spirits of wine and capillary attraction, 



763. 



Spitzbereen, force of gravity at, 747. 

 Spokes of a wheel are levers, 727. 

 Sponginess in cast-iron, 7U9. 

 Spouting fluids, 7'it. 

 Spouts, computation of their range and 



velocity, 765. 



Spring, air acting as a, 879. 

 Spring-balance in locomotives, 854. 

 Springs employed as a force, 839. 

 Springs, governing power of, 839. 

 Springs, intermitting, 773. 

 Springs, their motion not regular, 839. 

 Spur-wheel, 728. 

 Square sections resist tension better than 



circular sections, 814. 

 Square wheel-work, 899. 

 Squirt is a miniature forcing-pump, 774. 

 Staff-riveting used in constructing boilers, 



850. 

 Staircase, power of man in carrying loads 



up a, 818. 



Stamper, methods for moving a, 895. 

 Stamping ore at mines, 692. 

 Standards of measure, 692. 

 Stars, their motion, 690. 

 Statical and dynamical mechanics, 689. 

 Statics, 6B9. 

 Statuaries represent horse's walk errone 



ously, 715. 



Stays for fixing the plates of steam-boil- 

 ers, 850. 

 Steam-boiler, apparatus for ascertaining 



the water-level in a, 852. 

 Steam-boiler, apparatus for supplying 



water to a, 852. 

 Steam-boiler, effects of internal pressure 



on the plates of a, 799. 

 Steam-boiler explosion, 852. 

 Steam-boiler, quantity of water required 

 to supply a, 852. 



team-boiler safety-valve, 853. 

 Steam-boilers, risk of explosion of, 853. 

 "iteam-condensation, 845. 

 Steam-driving machinery, 879. 

 team-engine, 842, et seq. 

 Steam-engines combined, 876. 

 Steam-engines compared, 871. 

 Steam-engines, condensing, 872. 

 Steam-engines, condensing, power deter- 

 mined, 876. 



steam-engines, Cornish, reports of, 878. 

 Steam-engines, double-acting, described, 



874. 

 Steam-engines, estimating the power of, 



866, 869. 

 Steam-engines for driving paddle-wheels, 



described, 875. 



Steam-engines for driving screw-pro- 

 pellers, 875. 

 Steam-engines, formula for calculating the 



power, 845. 

 Steam-engines, governor, 862. 

 Steam-engines, high-pressure and low- 

 pressure, 846. 

 Steam-engines, influence on the arts, 781. 

 Steam-engines, marine, 875. 

 Steam-engines, momentum equal to a 



blow of a 68 Ib. cannon-ball, 802. 

 Steam-engines, Newcomen's, 871. 

 Steam-engines, non-condensing, where 



convenient, 880. 

 Steam-engines, portable, 880. 

 Steam-engines, power of, for pumping 



reckoned, 878. 

 Steam-engines, power measured by the 



dynamometer, 900. 

 Steam-engines, ratio between ca liulttd 



and real power, 868. 

 Steam-engines, rotary, 876. 

 Steam-engines, Savery's, 871. 

 Steam-engines, single acting, 874. 

 Steam-engines, single acting were the 



earliest, 878. 

 Steam-engines the most advantageous of 



all motive apparatus, 842. 

 Steam-engines, Watt's improvements, 



871. 

 Steam entering a cold cylinder becomes 



condensed, 856. 



Steam, estimated volume of, 845. 

 Steam-gauges, 854. 

 Steam-hammer, 904. 

 Steam in boilers, how much space there 



should be for, 851. 

 Steam, indication of its power, 846. 

 Steam, in what consists the great secret of 



its power, 845. 

 Steam, its elasticity is proportional to its 



temperature, 844. 

 Steam, its power by expansion, 846. 

 Steam, 1 Ib. of fuel can turn 10 Ibs. of 



water into, 852. 

 Steam passages, their size, 870. 

 Steam-pipe conveying the steam to the 



cylinder, 854. 



Steam povy, applications of, 878. 

 Steam power, direct application of, 904. 

 Steam power, formula for calculating, 



845. 

 Steam pressure and temperature table, 



845. 

 Steam pressure measured in inches of 



mercury, 844. 



Steam pressure, what is the average ac- 

 tual force of, 867. 

 Steam-riveting machine, 904. 

 Steam, superheated, 877. 

 Steam table-engine described, 866. 

 Steam, the volume multiplied by the 



pressure is constant, 846. 

 Steam traction-engines, 866. 

 Steam-vessels, form of bearing used in, 



902. 



Steam-veisel, shock on paddle-wheels, 

 813. 



Steam-vessel, the power required for a, 



881. 

 Steam, waste between boiler and engine, 



866. 



Steel and brass, table of friction, 902. 

 Steel and ice, table of friction, 902. 

 Steel, data for calculating the strength, 



797. 



Steel, table of torsive strength of, 8 1 3. 

 Steelyard, Roman, Danish, Quintenz, 



724; Roberval's, 725. 

 Stick, pointed, how it may be balanced on 



the tip of the finger, 713. 

 Stiffness obtained by corrugating. 808. 

 Stirrat and Whitelaw's turbines, 835. 

 Stone columns, experiments on, 801. 

 Stone, Portland, crushing pressure, 801. 

 Stones, effect of compressing, 801. 

 Stones, experiments on crushing, HOI. 

 Stones, machinery for preparing, 783. 

 Stop-cock in steam-engines, 857. 

 Stop-valve in steam-engines, 857. 

 Storms, velocity and pressure of, 820. 

 Strain, clipping or shearing, 815. 

 Strain, compressive (See Compression). 

 Strain decreases by rapid rotation, 815. 

 Strain in machinery, rules for estimating, 



882. 



Strain, torsive (See Torsion). 

 Strain, transverse, 802. 

 Strains of materials, 795. 

 Strap, crossed, 8S6. 

 Strap-eye in the connecting-rod, 859. 

 Straps for conveying motion, 885. 

 Straps, friction, 899. 



Straps, rules for finding dimensions, 902. 

 Straps, shifting mechanism for, 887. 

 Straps to turn wheels, 728. 

 Streams, calculation of their force, 826. 

 Streams, computed power of, 834. 

 Streams, deep and shallow, comparative 



velocity of, 834. 



Streams, estimated speed of, 826. 

 Strength, how to secure the greatest, 



810. 



Strength of bars of any material, 797. 

 Strength of materials, 795. 

 Strength of materials a necessary know- 

 ledge, 779. 

 Strength of materials, a subject in an un. 



satisfactory state. 817. 

 Strength of materials, rules for calcu- 

 lating, 797. 



Strength-product in beams, 811. 

 Strength secured by a proper disposal of 



material, 809. 

 Strength, transverse, of beams, table 



of the, 810. 

 Strength, transverse, of materials, mode 



of computing, 804. 

 Striking gear, its use, 887. 

 Strings, tension of, 743, 744. 

 Strut fixed to a beam, 810. 

 Stuffing-box of a piston, 857. 

 Sucker, a proof of atmospheric pressure, 



768. 



Suction-pump, 773. 

 Sugar-cane mills hi the West Indian 



islands, 825. 



Sugar, machinery for preparing, 783. 

 Sulphide of carbon, proposed engine, 813. 

 Sun and planet-wheel, *'J'J. 

 Sun, motion of the, 690. 

 Superficial measure, 692, 906. 

 Surfaces, plane, in drawing, 784. 

 Surfaces, unfolded, drawing, 789. 

 Surveys, scales used in drawing, 795. 

 Syphon described, 772. 

 Syphon, Wurtemberg, 773. 

 Syringe, 774. 



TABLK of cohesive strengtn of cylindrical 



copper bars, 797. 

 Table of cohesive strength of hempen 



bower cables, 797. 



