FIRE TESTS OF NEW YORK BUILDING STONES 



21 



I 



c i, >->> 



'"8? I 

 HI 



C co O 



Iji 



M 8*5 



*O ta <u 'rt 



a > a 



cu a> (v> M co co 



OT 



l 



o w 



2 tl o 



c5 8 o 



oo ftrt d 



sac 



CO CO O 



O OT^ 



511 



no'S 



11 



II! 



a ' 



Brown 

 cube spli 

 along be 

 transvers 



? bo 





3ti.g 

 |Wg 



iir 



"-s 



g fe 



d, 



^lii 



r^b^J 

 -S.S' 



a 



:o2 

 1-3 S 



00 



o 



ie 





Deep brown, one 

 prominent crack 

 around three 

 sides approxi- 

 mately along- 

 bed 



if 



lll 



i 



v 



