THE MIXING AND QUARRV INDUSTRY I908 45 



are examples of the spring waters of nonmedicinal character that 

 are sold for family and office use. The amounts of dissolved min- 

 eral matter are expressed in grains per L'nitcd States gallon. 



DIAMOND 



ROCK 



SPRING 



NaCl . . 

 CaS04 . 

 MgS04. 

 Na2S04 . 

 K2SO4 . 

 CaCOs. 

 FeCOs. 



NaaCOa . 



MgCOs. . . 

 NaXOs.. . 



Si02 



CO2 (free) . 



.48 



9 36 

 1.88 



.07 



a. 43 

 63.09 



•74 

 tr 



REDSTONE 

 SPRING 



31-41 



3 40 



2 . IQ 



7.64 



I. 17 



•0^ 



WEEDSPORT 

 SPRING 



•03 

 8.54 

 I . 29 



. 22 



1-74 



.06 



2.66 



aReported as NaHCOa. 

 6Reported as Mg(HC03)2- 



NATURAL GAS 



The natural gas fields of the State are found in the central and 

 western parts, south from Lake Ontario. There are 15 counties 

 that contain productive fields. Though scarcely comparable as 

 regards size with the gas pools found in the Appalachian region 

 farther south, the fields appear to have a long life, as instanced 

 by those in Chautauqua county where the first holes were put down 

 over 80 years ago and which are still productive. The gas fields 

 of Cattaraugus county have been under development since 1865. 

 Despite the continuous drain upon the resources, the yield of gas 

 has increased markedly of recent years in response to the greater 

 activity in exploration. 



Geological occurrence. Tlie range of the productive gas pools 

 geologically may be said to extend from the base of the Paleozoic 

 sedimentary formations, the Potsdam sandstone, to the Chemung 

 and Portage formations of the Devonic which are near the top of 

 the Paleozoic series as represented in X'ew York. Certain forma- 

 tions, however, are more prolific than others, and the wells in each 

 field, as a rule, derive their main supply from a definite horizon. 



Though small amounts of gas have been found in sandstones 

 correlated with the I'otsdam, the lowest beds which arc the source 

 of any considerable flow are the limestones of Trenton age. The 



