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Show f that of tho artificiality of the markings mark-ings supposed by Lowell to bo great irrigation ditches. To make such vast works, he goes on to point out, sociological soci-ological evolution 'must have proceeded proceed-ed further than with us. "Nations, ' ho urges, "roust have sunk their local I atrlotism In a wider breadth of v:ew." This was not dono in a day, or course. The drying of Mars was gradual and tho first canals were small affairs, somewhat like our city ocqueducts. They were added to, from century to century, until they lopped the polar supplies themselves. It Is hard to think that all this "evolution "evolu-tion of mighty engineering genius, combined with a world-patriotism far nobler than our potty love of country, should come to naught, yet Professor Lowell sees no other fate for the Martians. Their globe will keep on drying up, and they will in time be parched out of existence. THE END OF MARS. Prof. Perclval Lowell's book, "Mars as the Abodo of Life," is a treaClsc on the genesis and evolution of worlds, using Mars as an illustration ct the , various processes the gravitation gravi-tation of particles or small masses to form a molten globe. Its gradual cooling, cool-ing, the shaping of its surface by water-sculpture and other agencies, the origin of organic life and its development, de-velopment, the evolution of climate, end the gradual drying and cooling ot the planet to a point where all life becomes extinct, says Literary Digest. Di-gest. The Mars of the 'illustrations is of course Professor Lowell's own Mars a body. of whpse existence the majority of astronomers are not yet persuaded. It is, as we know from his previous works, a planet whose development has proceeded farther than that of the earth and on somewhat some-what different lines a dry globe of deep and - wide-spread polar snows, melting In spring to water which is conducted over the surface by stupendous stu-pendous channels, made by intelligent intelli-gent living beings, and rendered visible visi-ble to us by the vegotatlon that springs up along , their banks. That planetary change has far advanced on Mars, Professor Lowell is certain, and Its condition Is therefore interesting to us, pointing out the stages through which our own earth must pass. Mars has loBt its oceans; our own are disappearing. dis-appearing. On both planets "terres-trlallty "terres-trlallty succeeds terraqueousness," which seems to be Professor Lowell' eomewhat sesquipedalian way of saying say-ing that both the earth and Mars are drying up. We have our little deserts, our Saharas, our object-lessons In Egypt and Carthage; on Mars the drying dry-ing process has gone further. Says Professor Lowell: "Study of the natural features of the planet leaves us, then, this picture of its present state a world-wide desert where fertile spots are tho exception, ex-ception, and not the rule, and where water everywhere is scarce. So 'scanty is this organic essential, that over the greater part of the surface thero is nono to quicken vegetation or to mip-port mip-port life. Only here and there by nature na-ture are possible those processes which make our earth the habitable, homolike place we know. In our survey sur-vey of Mars, then, wo behold tho saddening picture of a world athlrst, where, as in our own Saharas, -water is the only thing needed, and yet where by nature it can not bo got. Eut one lino of salvation is open to it, and that llos in the periodic unlocking un-locking of the remnant of water that each year gathers, as snow and ico about Its poles. . , . . . "The struggle for existence In their Tdanefs decrepitude and decay would tend to evolve intelligence to copo with circumstances growing momentarily momen-tarily more and more adverse. But, furthermore, the solidarity that the conditions prescribed would conduce to a breadth of understanding sufficient suffi-cient to utilize it. Intercommunication Intercommunica-tion over tho whole globe is made not only lossible, but obligatory. This would lead to tho easier spreading over it of somo dominant creature especially es-pecially were this being of an ad-vrrncecl ad-vrrncecl order of Intellect able to rise above Its bodily limitations to amelioration ameli-oration of the conditions through exercise ex-ercise of mind. What absence ot seas would thus entail, absence of mountains would further. These two obstacles to distribution removed, life there would tend the quicker to reach a highly organized stage. Thus Martian conditions themselves make fcr intelligence." Having thus established the antecedent ante-cedent probability of intelligent llf-J on Mars, tho writer proceeds to point out what he considers the actual evidence evi-dence ot its existence the celebrated canals, whose artificial character he regards as certain, since they are neither rivers nor cracks, and all other xiatural explanations have proved similarly simi-larly Impossible. In fact, the theory of lite cm Mars Btands or falls with i |