NEW YORK STATE MUSEUM 



5 8 



Slates, refractoriness, 7 1 ; effects of 

 Baltimore fire on, n* 



Tests made on New York building 

 stones, 12'— 28*. See also Fire tests; 

 Flame tests 



Van Schwartz, cited, 9 s , 36 s 



Warsaw blue stone, fire tests, 20 2 , 21 ; 



percentage of absorption, 27* 

 Winchell, N. H., experiments, 7* 

 Woolson, cited, 11 s 



