394 NEW YORK STATE MUSEUM 



Gypsum (continued) 



Merrill. Gypsum; Directory of Producers. Mus. bul. 15. 1895. p. 550-51. 



Same, Mus. rep. 48 (for 1894) 1895. 1:550-51 (2d paging). 

 Merrill. Gypsum. Mus. bul. 19. 1898. p.224. Same, Mus. rep. 51 (for 



1897) 1899. 1:224. 



Parsons. Recent Developments in the Gypsum Industry in New York 

 State. Geol. rep. 20 (for 1900) 1902, p.r!77-83. Same, Mus. rep. 54 

 (for 1900) 1902. l:r!77-83. 



Whitlock. Gypsum. Mus. bul. 58. 1902. p.126-27. 

 Gypsum group, see Onondaga salt group. 

 Halite, see Salt. 



Halotrichite. Beck. Alumina-sulphate of Iron. Min. N. Y. 1842. p.400. 

 Hamilton county. Emmons. Hamilton County. Geol. rep. 2d dist. (for 



1838) 1839. p.224-30. Geol. N. Y. pt2. 1842. p.414-17. 



Emmons. Survey in Interior of Hamilton, Essex and Franklin Counties. 



Geol. rep. 2d dist. (for 1840) 1841. p.113-33. 

 Kemp & Newland. Preliminary Report on the Geology of Washington, 



Warren and Parts of Essex and Hamilton Counties. Geol. rep. 17 



(for 1897) 1899. p.499-553. pi. (phot.) maps (uncolored). Same, Mus. 



rep. 51 (for 1897) 1899. 2:499-553. pi. (phot.) maps (uncolored). 

 Kemp, Newland & Hill. Preliminary Report on the Geology of Hamilton, 



Warren ami Washington Counties. Geol. rep. 18 (for 1898) 1899. 



p.137-62. maps (uncolored). Same, Mus. rep. 52 (for 1898) 1900. 2:137- 



62. maps (uncolored). 

 Hamilton group. Bishop. Hamilton Group of Erie County. Geol. rep. 15 



(for 1895) 1897. p.315-20, 390. Same, Mus. rep. 49 (for 1895) 1898. 



2:315-20, 390. 

 Clarke. Hamilton Group in Ontario County. Geol. rep. 4 (for 1884) 1885. 



p.11-19. 

 Clarke. Annelid Teeth from the Lower Portion of the Hamilton Group 



and from the Naples Shales of Ontario County, N. Y. Geol. rep. 6 



(for 1886) 1887. p.30-32, Ipl. 

 Dela field. Hamilton Group of Seneca County. Ag. Soc. Trans. 10 (for 



1850) 1851. p.452-57. 



Dickinson. Quarries of Bluestones and other Sandstones. Mus. bul. 61. 



In press. 

 Evans. Hamilton Group of Madison County. Ag. Soc. Trans. 11 (for 



1851) 1852. p.699. 



Geddes. Hamilton Group of Onondaga County. Ag. Soc. Trans. 19 (for 



1859) 1860. p.253. 

 Grabau. Faunas of the Hamilton Group of Eighteen-mile Creek and 



Vicinity. Geol. rep. 16 (for 1896) 1899. p.227-339. pi. (phot.) 3tab. 



nrnp. Same, Mus. rep. 50 (for 1896) 1899. 2:227-339. pi. (phot.) 3tab. 



map. 



Map of the township of Hamburg, Erie co. (uncolored) 18x24.5cm. 

 Hall. Hamilton Group. Geol. N. Y. pt4. 1843. p.184-211. Pal. N. Y. 1859. 



3:45-48. 

 Hall. Hamilton Group in Erie County. Geol. rep. 4th dist. (for 1840) 



1841. p.162-64. Geol. N. Y. pt4. 1843. p.472-73. 

 Hall. Hamilton Group in Genesee County. Geol. rep. 4th dist. (for 



1839) 1840. p.429. Geol. N. Y. pt4. 1843. p.467. 



Hall. Hamilton Group in Livingston County. Geol. rep. 4th dist. (for 



1839) 1840. p.421. Geol. N. Y. pt4. 1843. p.462. 

 Hall. Hamilton Group in Ontario County. Geol. rep. 4th dist. (for 1838) 



1839. p.312-13. Geol. N. Y. pt4. 1843. p.457. 

 Hall. Hamilton Group in Seneca County. Geol. rep. 4th dist. (for 1838) 



1839. p.296-300. Geol. N. Y. pt4. 1843. p.451. 



