THE FIRST VOLUME OF 



The International Scientific Series. 



-♦-♦♦- 



FORMS OF WATER, 



AY CLOUDS, RAIN, EIVERS, ICE, AND GLACIERS. 



By Professor JOHN TYXDALL, LL. D., F. R. S. 



One volume, i^mo. Cloth. Price, $1.50. 



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 4^> 



OPINIONS OF THE PRESS. 



" In this attractive volume we have the first instalment of the ' International Scientific 

 Series,' a work devoted to the popular exposition of physical a; . social science, and to the 

 phenomena of life and mind. In the volume now published. Professor Tyndall has pre-, 

 sented a noble illustration of the acuteness and subtlety of his intellectual powers, the 

 scope and insight of his scientific vision, his singular command of the appropriate language 

 of exposition, and the peculiar vivacity and grace with which he unfolds the results of in- 

 tricate scientific research." — New York Tribune. 



" In some respects this book differs from any popularization of science we have ever 

 met The author treats his reader as a companion. They take delightful rambles to- 

 gether. At one time they stroll beside the river and trace it to its source. They discuss, 

 as friends, the origin of clouds, through the action of the sun's heat upon the surface of the 

 sea and other bodies of water, causing an invisible vapor to rise to the regions of the atmos- 

 phere, where the cold condenses it and renders it visible. Tyndall acts as guide to his 

 reader through Switzerland. They visit the glaciers of the Alps together. The one listens 

 to the other's eloquent explanation of these wonderful phenomena." — The World. 



"In the domain of physics, as what was once termed natural philosophy is now usually 

 called, Professor Tyndall has no superior. In addition to this, he is at the head of modem 

 writers on science. His books, like his lectures, are popular because they are interesting. 

 The reputation of the author is security for their accuracy; let us hope, too, that the world 

 has outgrown the fallacy that a' popular presentation of scientific facts necessarily involves 

 untruth."— r/i^ Sun. 



D. APPLETOlSr & CO., 



54:9 & 531 Broadtvau, ^exv Torh. 



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