SCIENTIFIC PROGRESS.
Those of us notyf t fifty yeais of ag° have probably lived in the most important am) intellpctuallyprogrp^ivp period of limn an history . Within ihis haK-pontury thp following inventions and dis O'erieshnve bepn among thp number ; Ocean pteam6bips, street railway?, elevated railways, telegraph lines, ocean cables telor hones, phonosrqaph and photography, and a score of new methods of pictore-maMng 1 , aniline colours, kerosene oil. electric lights, steam fire-engine?, chemical fire— pxiingnishers, ona?stlietics. and painless gnrgery, gun-cotton, nitio -glycerine, dynaraifp, giant powdor, aluminium, magnesium, and other new metal?, electro- pi at in sr, «ppctrum analysis and Bpectro^copf, nudiphone, pneumatic tubps. electn'c motor, electric railway, pJpetric lw\h, typewriter, cheap postal system, S^eam boating, and steam, hydraulic el*vntoiB, vestibule cars, cantalever br dges. These are only a pait. All positive knowledge of the physical constitution of planetary and stellar worlds has been attninpd within thi=; period.
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Te Aroha News, Volume VII, Issue 386, 20 July 1889, Page 8
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145SCIENTIFIC PROGRESS. Te Aroha News, Volume VII, Issue 386, 20 July 1889, Page 8
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