INTRODUCTION. 
Ir is evident that a geological survey of a section is not com- 
plete unless considerable attention is paid to the mineral wa- 
ters, for they hold in solution the soluble constituents of the 
soil and the rocks, and their composition depends on the con- 
stitution of the superficial or underground strata. 
The chief writers on this subject in the United States, aside 
from those who write in government reports, are Dr. John 
Smith, the author of ‘‘Curiosities of Common Water,’’ Ameri- 
can reprint, who wrote in 1725. Dr. John Smith published a 
book on ‘‘Baths and Mineral Waters,’’ 1831, and also wrote 
‘Mineral and Thermal Springs of the United States and Can- 
ada,’’? 1875. Dr.J.J.Moorman wrote ‘‘ Mineral Springs of North 
America in 1873.’’ Dr. Geo. E. Walton wrote ‘‘ Mineral Springs ’”’ 
of United States and Canada,’’ third edition, 1883. A very 
complete compilation was made by acommittee of the American 
Medical Association in 1880. In 1885 Doctor Bell published 
‘‘Climatology and Mineral Waters of the United States.’’ 
In Bulletin No. 32, United States Geological Survey, 1886, 
Doctor Peale mentioned 2822 mineral-spring localities and 8843 
individual springs, 634 of which were utilized as resorts, and 223 
as sources of commercial mineral water. Besides the above, 
there is a large amount of valuable material in the reports of 
the geological surveys of the various states and of the United 
States. The most recent work published in this country is 
‘Mineral Waters of the United States, and their Therapeutic 
Uses,’’ by Dr. James K. Crook, Philadelphia, 1899. An inter- 
esting historical bibliography on mineral waters appeared in 
the report of the mineral waters of Missouri, by Doctor 
Schweitzer, pages 236-244. A partial bibliography of mineral 
waters is given in the latter part of this book. 
According to the report of the U.S. Geological Survey on 
‘“The Production of Mineral Waters,’’ for 1900, by A.C. Peale, 
(21) 
