476 NEW YORK STATE MUSEUM 



Portage sandstones (continued) 



Luther. Stratigraphic Value of the Portage Sandstones. Mus. bill. 52. 

 1902, p. 616-31. 



See also Oneonta sandstone. 



Portland cement, see Cement. 



Potash. Beck. Sulphate of Potash, Carbonate of Potash,. Muriate of Pot- 

 ash, Hydrobromate of Potash. Min. rep. (for 1838) 1839. p.17. Min. 

 N. Y. 1842. p.201-2. 



Potassium dichromate. Ries. Potassium Bichromate. Mus. bul. 44. 1901. 



p.671. Same, Mus. rep. 54 (for 1900) 1902. 3:671. 

 Potsdam sandstone. Clarke & Schuchert. Po>tsclam Sandstones. See New 



York series. 



Conrad. Potsdam Sandstone. Pal. rep. (for 1840) 1841. p.31. 

 Gushing. Potsdam Sandstone of Clinton County. Geol. rep. 13 (for 1893) 



1894. p.476, 478-79. Same, Mus. rep. 47 (for 1893) 1894. p.670, 672-73. 

 Geol. rep. 15 (for 1895) 1897. p.510-73. Same, Mus. rep. 49 



(for 189-5) 1898. 2:510-73. 

 Geol. rep. 19 (for 1899) 1901. p.r63-66. Same, Mus. rep. 53 



(for 1899) 1901. l:r63-66. 

 Cushing. Report on the Boundary between the Potsdam and pre- 



Gambrian Rocks North of the Adirondacks. Geol. rep. 16 (for 1896) 



1899. p.1-27. map (uncolored) 18x31cm. Same, Mus. rep. 50 (for 1896) 



1899. 2:1-27. map (uncolored) 18x31cm. 

 Darton. Potsdam Sandstone in Mohawk Valley Region. Geol. rep. 13 



(for 1893) 1894. p.410-17. Same, Mus. rep. 47 (for 1893) 1894. p.604-11. 

 Emmons. Sandstone of Potsdam. Geol. rep. 2d dist. (for 1837) 1838. 



p.214-17. 

 Emmons. Accumulation of Materials composing the Potsdam Sandstone. 



Geol. rep. 2d dist. (for 1839) 1840. p.347-49. 

 Emmons, Potsdam Sandstone. Geol. N. Y. pt2. 1842. p. 102-5. Ag. N Y 



1846. 1:117-18. 

 . Emmons. Potsdam Sandstone in Clinton County. Geol. N. Y. pt2. 



1842. p.308-10. 

 Emmons. Potsdam Sandstone in Essex County. Geol. rep. 2d dist. (for 



1837) 1838. p.230-32. Geol. N. Y. pt2. 1842. p.266-69. 

 Emmons. Potsdam Sandstone in Franklin County. Geol. N. Y. pt2. 1842. 



p.331-32. 

 Emmons. Relations of the Potsdam Sandstone in Jefferson County. 



Geol. rep. 2d dist. (for 1839) 1840. p.322. Geol. N. Y. pt2. 1842. p.377-80. 

 Emmons. Potsdam. Sandstone in St Lawrence County. Geol. N. Y. pt2. 



1842. p.360-61. 

 Emmons. Potsdam Sandstone in Warren County. Geol. N. Y. pt2. 1842. 



p.177-79. 



Emmons. Fossils. Geol. N. Y. pt2. 1842. p.105, 268-69. 

 Fitch. Potsdam Sandstone of Washington County. .Ag. Soc. Trans, 9 



(for 1849) 1850. p.824-25. 

 Ha'l. Potsdam Sandstone. Geol. N. Y. pt4. 1843. p.27-28. Pal. N. Y. 



1859. 3:1-4. 



Hall. Organic Remains. Pal. N. Y. 1847. 1:1-4. 

 Hall. Preliminary Notice of the Fauna of the Potsdam Sandstone, with 



remarks upon the previously known species of fossils and descriptions 



of some new ones from the sandstone of the upper Mississippi vall?y. 



Mns. rep 16 (for 1862) ]863. p. 119-209. 6pl. 



Also published In Alb. Inst. Trans. 1867. 5:93-195. 



a First use of term. 



