REPORT OP THE DIRECTOR AND STATE GEOLOGIST 1901 rl47 



Alfred Dibble, Belvidere 



A. W. Bouton, Roxbury 



De Graff & Roberts, Eagle Harbor 



Hudson River Bluestone Co., Maiden 



Thavis & Kingsbury, Hale Eddy 



Ralph Cairns, Walton 



Gilbert Brady, Rochester 



Roofing slate 

 J. J. McDonough, Slateville. Red roofing slate 

 Allen & Williams, Middle Granville. Red roofing slate 

 I. S. Herbert, North Granville. Red roofing slate 

 Mathews Slate Co., Poultney Yt. Red, green and purple 



roofing slate 



E. J. Johnson & Co., New York. Red roofing slate from 



-quarry at Middle Granville 



Penrhyn Slate Co., Middle Granville. Purple roofing slate 



and glazed slate 



Walter C. White, Granville. Red roofing slate 



Algonquin Red Slate Co., Hatchhill, Granville. Red and green 



slate 



Portland cement 



Empire Portland Cement Co., Warner's. Marl, clay, cement 

 clinker and cement 



T. Millen & Co., W T ayland. Marl, clay, cement clinker, cement 

 and briquets for testing 



Helderberg Cement Co., Howes Cave. Limestone and cement 



Glens Falls Portland Cement Co., Glens Falls. Limestone, 

 «lay, cement clinker and cement 



Wayland Portland Cement Co., Wayland. Marl, clay, cement 



clinker and cement 



Marl 



Empire Portland Cement Co., Warner's 



T. Millen & Co., Wayland 



Natural cement 

 New York and Rosendale Cement Co., Rondout. Cement rock 

 and cement 



