NEW YORK STATE MUSEUM 



Slates, refractoriness, 7 1 ; effects of 

 Baltimore fire on, n 4 



Tests made on New York building 

 stones, i2 3 -28 e . See also Fire tests; 

 Flame tests 



Van Schwartz, cited, 9 5 , 36 3 



Warsaw blue stone, fire tests, 2o 2 , 21 ; 



percentage of absorption, 27* 

 Winchell, N. H., experiments, 7 6 

 Woolson, cited, n s 



