84 BULLETIN OF THE NEW YORK STATE MUSEUM 



pervious to rats, does not harbor vermin or the germs of 

 disease, as it is not porous; it can be frescoed, papered, 

 painted, etc. and costs but little more than ordinary hair and 

 mortar plaster." If half of these qualities are real it would 

 seem the company have a good article for sale. 



The use of gypsum as the basis of wall plaster is noted 

 not because the gypsum of New York is used in the process 

 (it is not so far as known) but because of a well founded 

 belief among quarrymen that the manufacturers will be com- 

 pelled to get their raw material near at hand in the future. 

 Also because Mr Olmsted of Oakfield has a stucco works in 

 the experimental stage. 



