Our grandparents thought they were as comfortable as possible, and they were, because they did not know any better. Do we know better? One hundred years from now, possibly, our great, great-grandchildren will consider us as having lived in the "stone age." The field of invention has no bars up,—you, all of us, are free to enter.

"The important thing in life is to have a great aim, and to possess the aptitude and perseverance to attain it."

CHAPTER II.
LOOKING BACKWARD

"Intelligent study and the application of unremitting effort to a definite purpose are the factors that overcome obstacles."

Here follows a list of the principal inventions chronologically arranged, with the names and nationalities of their inventors.

Year.Name of Invention.Name of Inventor.Nationality.
1620Spirally grooved rifle barrelBlaewGerman.
1643BarometerTorricelliItalian.
1660Discovery of Electrical PhenomenaWilliam GilbertEnglish.
1663Steam engineThos. NewcomenEnglish.
1690Steam engine with pistonDenis PapinFrench.
1702First practical application of steam engineThos. SavoryEnglish.
1709ThermometerFahrenheitDanzig.
1725Franklin printing pressBenj. FranklinU.S.
1731StereotypingWilliam GedScotch.
1733Weaving flying shuttleJohn KayEnglish.
1745Leyden JarKleistGerman.
1752Lightning conductorBenj. FranklinU.S.
1763Spinning jennyJos. HargreavesEnglish.
1767Piano England.
1775Cut nailsJere. WilkinsonU.S.
1777Circular wood sawMillerEnglish.
1782Steam engineJas. WattScotch.
1783Balloon inflated with gasMontgolfierFrench.
1784Puddling ironHenry CortEnglish.
1784Cast iron plowJas. SmallScotch.
1786SteamboatJohn FitchU.S.
1787Steam road wagon, first automobileOliver EvansU.S.
1788Threshing machineAnd. MeikleEnglish.
1791Wood planerSam'l BenthamEnglish.
1794Cotton ginEli WhitneyU.S.
1800Electric batteryVoltaItalian.
1801Fire-proof safeRichard ScottEnglish.
1803Steel penWiseEnglish.
1804Malleable iron castingsLucasEnglish.
1808Band wood sawNewberryEnglish.
1808First sea-going steamboatJohn StephensU.S.
1810Revolving cylinder printing pressFred'k KoenigGerman.
1811Breech-loading shot gunThornton & HallU.S.
1814First locomotive, U.SGeo. StephensonEnglish.
1815Miner safety lampSir Humphry DavyEnglish.
1815Gas meterCleggEnglish.
1823Discovery of water gasIbbetsonEnglish.
1825Portland cementAspdimEnglish.
1827Friction matchesJohn WalkerU.S.
1828Hot blast for iron furnacesNeilsonScotch.
1829Washington printing pressSam'l RustU.S.
1831ChloroformGuthrieScotch.
1832Electric telegraphProf. MorseU.S.
1832Rotary electric motorSturgeonEnglish.
1832"Old Iron Sides" locomotiveBaldwinU.S.
1833Steam whistleGeo. StephensonEnglish.
1834ReaperCyrus H. McCormickU.S.
1834Carbolic acidRungeGerman.
1835Horse-shoe machineBurdenU.S.
1836Acetylene gasDavyEnglish.
1836RevolverSam'l ColtU.S.
1836Screw propeller for steam navigationJohn EricksonU.S.
1837Galvanizing ironCraufurdEnglish.
1839Babbitt metalIsaac BabbitU.S.
1839Vulcanizing rubberGoodyearU.S.
1839DaguerreotypeLouis DaguerreFrench.
1840Artesian wells French.
1842Automatic pianoSeytreFrench.
1844First telegram sentProf. MorseU.S.
1845Double cylinder printing pressRichard HoeU.S.
1845Pneumatic tireThompsonEnglish.
1846Sewing machineElias HoweU.S.
1846Ether as an anaestheticDr. MortonU.S.
1847NitroglycerineSobrero
1847Improved Hoe printing pressRichard HoeU.S.
1849Steam pressure gaugeBourdonFrench.
1849Corliss engineGeorge H. CorlissU.S.
1850Mercerized cottonJohn MercerEnglish.
1851Breech-loading rifleMaynardU.S.
1851Ice-making machineGorrieU.S.
1852Telegraph fire alarmChanning & FarmerU.S.
1854Diamond rock drillHermanU.S.
1854RevolverSmith & WessonU.S.
1855CocaineGaedekeGerman.
1855Bessemer steelSir Henry BessemerEnglish.
1855BicycleMichauxFrench.
1856Sleeping carWoodruffU.S.
1858Cable carGardnerU.S.
1858First Atlantic cableCyrus FieldU.S.
1859"Great Eastern" launched U.S.
1861Passenger elevatorE. G. OtisU.S.
1861Barbed wire fence U.S.
1862Gattling gunDr. R. J. GattlingU.S.
1865Antiseptic surgerySir Jos. ListerEnglish.
1866Open hearth steel processSiemens-MartinEnglish.
1866TorpedoesWhiteheadU.S.
1868Typewriting machineC. L. SholesU.S.
1868DynamiteNobelFrench.
1868OleomargarineMegeFrench.
1868Sulky plowSlusserU.S.
1869Spring tooth harrowGarverU.S.
1870CelluloidHyattU.S.
1872Automatic brakeGeo. WestinghouseU.S.
1872Car couplerE. H. JanneyU.S.
1873Quadruplex telegraphThos. A. EdisonU.S.
1873Twine binder harvesterGorhamU.S.
1873Self-binding reaperLoche & WoodU.S.
1875Roller flour millsWegmannU.S.
1875Ice-making machinePictetSwitzerland.
1876TelephoneDr. Alex. Graham BellU.S.
1877PhonographThos. A. EdisonU.S.
1877Gas engineN. A. OttoU.S.
1877Telephone transmitterEmile BerlinerU.S.
1878Carbon filament for electric lampsThos. A. EdisonU.S.
1878Rotary disc cultivatorMallonU.S.
1880Telephone transmitter BlakeU.S.
1880Hammerless gunGreenerU.S.
1880Typhoid bacillusRobert KochGerman.
1880Pneumonia bacillusSternbergU.S.
1881Buttonhole machineReeceU.S.
1882Tuberculosis bacillusRobert KochGerman.
1882Hydrophobia bacillusLouis PasteurFrench.
1884Cholera bacillusRobert KochGerman.
1884Diphtheria bacillusLoeflerGerman.
1884Lockjaw bacillusNicolaierFrench.
1884AntipyreneKunoU.S.
1884Linotype machineOttmar MergenthalerU.S.
1885First electric street railway in the U.S. Baltimore, Md.
1885Overhead electric trolleyVan DepoleU.S.
1886GraphophoneBell & TainterU.S.
1887Cyanide processMcArthur & ForestU.S.
1887Incandescent gas lightCarl WelsbachGerman.
1888Harveyized armor plateHarveyU.S.
1888Kodak snapshot cameraEastman & WalkerU.S.
1890Bicycles equipped with pneumatic tires U.S.
1890Magazine rifleKrag-JorgensenU.S.
1891Rotary steam turbineParsonsEnglish.
1893KinetoscopeThos. A. EdisonU.S.
1893CarborundumE. G. AchesonU.S.
1893Calcium carbide electrically producedThos. L. WilsonU.S.
1895Liquifying airCarl LindeGerman.
1895X-raysProf. RoentgenGerman.
1895Acetylene gas from calcium carbideThos. L. WilsonU.S.
1896Wireless telegraphyG. MarconiItalian.
1896Finsen raysFinsenDanish.
1898Non-whittling lead pencilF. H. LippincottU.S.
1900Mercury vapor electric lightPeter Cooper HewittU.S.
1901AirshipM. Santos-DumontFrench.
1901Automobile mowerDeering Harvester Co.U.S.

From the Encyclopedia Americana.

"There are no elevators in the house of success."—Silent Partner.


Since the above list (taken from the Encyclopedia Americana) was published, there have been a large number of very important inventions brought out.