rl4 NEW YORK STATE MUSEUM 



escape of the higher glacial waters, and of channels and shore 

 lines on the slope facing the Erie basin. 3) The region of the 

 matured shore line of Lake Iroquois between Richland and 

 Watertown. To the first district three trips were made; to the 

 second district, two trips; and to the third district, one trip. 



The work was not completed in either the east or west dis- 

 tricts, as unexpected and important phenomena were discovered. 

 Final work on the Morrisville quadrangle was deferred in order 

 to wait for the engraved map, the photolithograph being unsatis- 

 factory. A large body of new and interesting facts has been 

 noted and mapped, and one or two more seasons of field work 

 will put the results in good shape for publication. 



EC0N03IIC GEOLOGY 



Dr Heinrich Ries of Cornell university has completed an, im- 

 portant report on the lime and cement industries of the state, 

 which is now in the printer's hands. The report on clay indus- 

 tries of New York by the same author is printed and nearly 

 ready for distribution. 



Mr A. L. Parsons has studied the recent developments in the 

 production of gypsum. 



H. T. Dickinson, during the past season, has spent four months 

 in the field study of the deposits and quarries of bluestone and 

 flagstone in New York. An article on quarries of southeastern 

 New York has been prepared by Mr E. C. Eckel. This work is 

 part of that which has been initiated for the preparation of a 

 new publication on the building stones of New York. 



Tests of road metal 



By arrangement made with William H. Burr C. E., professor 

 of civil engineering in Columbia university, a number of speci- 

 mens of rock used in various parts of the state for road metal 

 were tested in the engineering laboratory at Columbia university. 

 The method of testing was, in general, that described in museum 

 bulletin no. 17, entitled Road materials a/nd road buildUig in New 

 Ywk, and the results are given in the following tables. 



The tests were conducted under the direction of Prof. Burr by 

 Prof. A. Black, his assistanft. 



