File:Official proceedings (1904) (14572845418).jpg

Identifier: officialproceedi04rail (find matches)
Title: Official proceedings
Year: 1901 (1900s)
Authors: Railway Club of Pittsburgh
Subjects: Railway Club of Pittsburgh Railroads
Publisher: Pittsburgh, Pa. : The Club
Contributing Library: Carnegie Library of Pittsburgh
Digitizing Sponsor: Lyrasis Members and Sloan Foundation

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well known that when such great spots occur they arecaused by great cyclonic action, and in all probability the sur-face temperature of the sun is higher when this occurs thanwhen the sun is absolutely quiescent, and it is now known thatthese spots are only dark by contrast with the brighter sur-rounding surface of the sun. Langley has, indeed, shown thatthe darkest part of a sun spot is 4,000 times brighter than thefull moon. When our sun was formed it was evidently the center of alittle spiral nebula, little in comparison with many of those ofwhich I have shown you pictures on the screen. When it waswhirling around it sent off from its spiral arms Neptune, Uran-us, Saturn. Jupiter, Mars, Earth. Venus, Mercury and a greatcoterie of little bodies caked planetoids, of which there havebeen more than 500 discovered. Some of the bodies thrown offfrom the great central mass are still verv hot. the planet Jup-iter no doubt being almost red hot, for we see beneath Building of a Universe. 235
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236 Proceedings Railway Club of Pittsburgh. its great cloud-covered surfaces ever and anon great red spotsthat seem to indicate that the temperature of this planet is atleast 1,000 degrees Fahrenheit. It is evidently not fit for humanhabitation. But some of the worlds that are smaller in mass, like theplanet Mars, have cooled off so much that they have probablygone beyond the stage of habitation and have reached a periodwhen life has ceased to exist unless it may be in the equatorialregions of say this planet Mars. The picture I show you uponthe screen gives evidence of a peculiar marking that has beenthought to be works of the Martian engineers in the way of ir-rigating canals. Lowell believes that if they are canals, what wesee is not the canal itself, but the vegetation that grov jponevery side of it, like the vegetation upon the banks of tne Nile.In fact, an object must be about 180 miles wide to be seen by allof the most perfect telescopes we have. Our earth is, so far asknown, t

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