X CONTENTS. 



PAGE 



Embaskmexts ............... 46 



Deltas ............... 48 



Ice-built Walls .............. 51 



Chapter IV. 



RELATION OF LAKES TO CLIMATIC CONDITIONS. 



Fresh Lakes. 



Chemical Composition ............ 55 



Types of Fresh Lakes . . . . . . . . . . . . .57 



The Laurentian Lakes ............ 57 



The U. S. Lake Survey ............ 57 



Chemistry of the Waters of the St. Lawrence ....... 59 



Erosion of Lake Shores . . . . . . . . . . . .60 



Commerce and Fisheries 61 



Mountain Lakes. 

 Lake Tahoe ............... 63 



Lake Chelan .............. 65 



Saline Lakes. 



Saline Lakes of Oceanic Origin .......... 69 



Saline Lakes of Terrestrial Origin ......... 70 



Chemical Precipitates ............ 71 



Great Salt Lake 77 



Mono Lake 83 



Chapter V. 



THE LIFE HISTORIES OF LAKES. 

 Lakes of Humid Eegions ............ 90 



Lakes of Arid Regions ............ 93 



Chapter VI. 

 STUDIES OF SPECIAL LACUSTRAL HISTORIES. 



Pleistocene Lakes of the Laurentian Basin ....... 96 



Lake Agassiz ........ ...... 103 



Pleistocene Lakes of the Great Basin ........ 106 



Lakes of the Remote Past ............ 114 



Index 122 



