MINERAL RESOURCES OF THE STATE OF NEW YORK 7 



the total quantity for 191 7 is 57,075 long tons with a value of 

 $354,000. In 1918 the amount is 63,982 long tons with a value of 

 $422,958. Gypsum, the basis of hard wall plasters and plaster of 

 paris, reaches in 191 7 the new figure for quantity of 606,268 tons 

 valued at $2,036,820. In 1918 the production amounted to 531,038 

 tons with a value of $2,670,099. Salt, inclusive of rock and evapo- 

 rated salt sold as such and the salt contents of brine used in alkali 

 manufacture, shows a large gain for the year 191 7, with a total 

 yield of 15,457,636 barrels valued at $5,371,713. Salt in 1918 

 showed a total of 15,218,071 barrels valued at $7,336,867. 

 Portland cement is recorded -v^dth a production in 1917 of 5,408,726 

 barrels and a value of $7,050,656. The same material in 191 8 

 showed a production of 4,074,159 barrels valued at $6,568,746. 

 The output of petroleum for the year 191 7 is practically unchanged 

 from that of the preceding year, amounting to 879,685 barrels 

 valued at $2,850,378. The 1918 output showed 808,843 barrels 

 valued at $3,307,814. Natural gas for 19 17 shows little fluctuation 

 from 1916, the flow measuring 8,371,747 thousand cubic feet, worth 

 $2,499,303, and in 1918 a flow of 8,460,583 thousand cubic feet with 

 a value of $5,673,131, a large increase in value. For talc the output 

 in 1917 of 74,671 tons valued at $881,462 represents a decline from 

 the 19 1 6 output of nearly 20 per cent. The 19 18 output of 71,167 

 tons shows a small decline but with an increased value, the total 

 production amounting to $902,100. The product of crystalline 

 graphite in 1917 of 2,941,040 pounds is valued at $261,548. The 

 19 18 production of 3,266,518 pounds valued at $273,188 is about 

 the average. For clay-building materials the figures indicate a 

 decided depression, and the outputs for 191 7 and 19 18 are smaller 

 than for many years. Of building brick the total number for 191 7 

 is only 660,183,000 valued at $5,118,966, or scarcely 60 per cent 

 of the normal quota. The year 19 18 shows a still further depression 

 with a production of but 314,428,000 valued at $3,063,555. For 

 other clay wares, exclusive of pottery, the aggregate value for 19 17 

 is put at $2,232,616, which represents about the same proportion 

 of the average product. In 19 18 the clay wares showed a total 

 production of $1,781,927. The production of pottery, however, 

 registers important gains for both years, the combined value of 

 all grades in 1917 being $4,076,817; the 1918 value $6,047,472. 

 In the quarry industries conditions during 191 7 and 19 18 seem 

 to have been active in some branches, but in general the reverse 

 of prosperous. The value in 19 17 of the quarry products altogether 

 is placed at $6,283,556, and in 1918 at $6,106,756. The large 



