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Show HEW PUBLICATIONS. m lOPL'LAli SCIESCE MONTHLY. Dwyer has received the Popular Science for July, which is richer than usual in its scientific articles. A lecture lec-ture by William Crooks, F. E. 8.t demonstrates from his own experiments experi-ments that like the other forms of force, light U found to be capable ot direct conversion into motion and of being delicately and accurately measured meas-ured by the amout of motion thuB produced. Prof. J. S. Newberry explains ex-plains the causes of the cold of the ice period, which contains some very startling facts and speculations. It is shown that the climate of Green- i land once came as far south aa New i York; that during the tertiary ago the climate of all the arctic regions was warm temperate. A luxuriant sorest then covered Greenland, and all the northern portion of this continent. con-tinent. It can be shown, too, that land connection then existed in northern latitudes between Europe and America, and aloo between America and Aaia, Tiie Atlantic bridge stretched Ironi Greenland to Iceland, thence to the Hebrides and Scotland, which was then part of the European continent. The Pacific ; bridge was where Bchridg's straits ow aro. We have demonstrative evidence that during the ice period 1 the glaciers and snow-fields of North America stretched continuously down along the Atlantic coat of North America to and below New York, and that the highlands of New England Eng-land and eastern Canada were corn-Ipletely corn-Ipletely covered, and probably dec-ply buried in sheets of ice and snow. A paper on storms by Prof. Conrad presents a great deal of novel information in reference to the character char-acter and causes of tho phenomena. Ordeals and Oaths is mainly on historical his-torical Bketch of the rise and progress of these tests of truth. The writer concludes that tho weakening ol theso artificial supports wilj not leave public pub-lic truth maimed and halting when tho drift and tendeucy of civilization and culture is towards the harmony and truth of nature. Lessons in Electricity and Certain Phases ol Bird-Life are papers worth attention. SCI t'DNE It's MONTHLY. A true- Centennial number, tho best ol the year so far. Somo of the illustrated articles are: Tho Story of the Signing; A Littlo Centennial Lady; Gabriel Conroy, chapter IX; RemiiiiMcenccB of Audubon ; Harvard University; Centennial Bell; Wagner Wag-ner at Bayreuth; Xho dtewart Portraits Por-traits of Wnshington ; tho Jirida of tho Itliino; Philip Nolan's friends; iMnicl Wehidr-r and tho Compromise .Measures of &"0. Dwyer has it. |