Remington Portable 



Fits in case only four inches high and can 

 be carried and used anywhere. Has the 

 staftdard keyboard, with four rows of keys 

 and no shifting for figures. Has the auto- 

 matic ribbon reverse. Has every feature you 

 associate with typewriting at its best. 



The extraordinary demand for the Remington 

 Portable- — which is taxing to the utmost our 

 factory capacity — is proof of its leadership, 

 in quality and popularity. 



Price, with caie, $60 



Remington Typewriter Company 



(Incorporated) 



374 Broadway New York 



Branches and Dealers Everywhere 



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 and Lovers of Nature 



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ARCADIA 



SOUND BEACH CONNECTICUT 



THE ORIGIN OF THE EARTH 



iB>' THOMAS C. CHAMBERLIN 



Professor Emeritus in the Department of Geology 

 The University of Chicago 



One of "The University of Chicago Science Series" 



FROM THE PREFACE 



"In telKng the story of this search for the mode by which the earth came 

 into being, we have let the incidents that led the inquiry on from one stage to 

 another fall in with the steps of the inquiry itself. It is in keeping with the 

 purposes of this series of booklets that the motives which set researches going 



should have their place with the quests that arose from them The final 



story of the birth of the earth will come only after a time, when the vestiges of 

 creation have been more keenly discerned and more faithfully rendered than is 

 possible now." 



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