10 



Table IV. Gypsum or Land Plaster 



L. A. Howard and G. D. Howard, Proctorsville, Vermont 

 Howard's Agricultural Talc 





Material insoluble in acids 80.53%. 



Neutralizing value in terms of calcium oxide 9.81. 



Publication of this Document approved by the Commission on Administration and Finance 

 2500. 2'40-D-562. 



