500 , NEW YORK STATE MUSEUM 



Sparry limestone. Emmons. Sparry Lime^t^e. Geol. N. Y. p;t2. 1842. 

 p.151-52. Ag. N. Y. 1846. 1:72-74. 

 Fitch. Sparry Limestone of Washington County. Ag. Soc. Trans. 9 (for 

 1849) 1850. p.843. 

 Spathic iron, see Siderite. 

 Specular iron ore, see Hematite. 



Sphalerite. Beck. Zinc Blende. Mln. N. Y. 1842. p.52, 408-11. Mus. rep. 

 3 rev. ed. (for 1849) 1850. p.l49. 

 Merrill. Localities. Mus. bul. 15. 1895. p. 580. Same, Mus. rep. 48 (for 

 1894) 1895. 1:580 (2d paging). 



Mus. bul. 19. 1898. p.233. Same, Mus. rep. 51 (for 1897) 1899. 



1:233. 

 "VSihitlocli. Sphalerite. Mus. bul. 58. 1902. p.54. 

 Sphene, see Titanite. 



Spinel. Beck. Spinelle. Min. N. Y. 1842. p.315-lS. Mus. rep. 3 rev. ed. 

 (for 1849) 1850. p.l35. 

 Hunt. Spinel. Mus. rep. 21 (for 1867) 1871. p.85. 

 Whitlock. Spinel. Mus. bul. 58. 1902. p.72-73. 

 Spodumene. Beck. Spodumene. Min. N. Y. 1842. p.368. 



Whitlock. Spodumene. Mus. bul. 58. 1902. p.93. 

 Spongiae. Clarke. Type Specimens in New York State Museum. Mus. 

 bul. 65. In press. 

 Girtv. Revision of the Sponces and Coelenterates of the Lower Helder- 

 berg Group of New York.^ Geol. rep. 14 uor 1894) 1895. p.l6, 259-309. 

 7pl. Same, Mus. rep. 48 (for 1894) 1895. 2:16, 259-309. 7pl. 

 Hall. Note on the Occurrence of Astylospongia in the Lower Helderberg 



Rocks. Mus. rep. 16 (for 1862) 1863. p.69-70. 

 Hall. Note on the Geological Range of the Genus Receptaculites in 



American Palaeozoic Strata. Mus. rep. 16 (for 1862) 1863. p.67-69. 

 Hall & Fitz-Gaertner. On the Structure of Astraeospongia meniscus. 



Mus. rep. 30 (for 1876) 1878. p.111-16. 

 Hall. Illustration of Cryptozoon. Mus. rep. 36 (for 1882) 1883. pl.6. 

 Dictyospongidae. Clarke. Dictyonine Hexactinellid Sponges from the 

 Upper Devonic of New York. Mus. bul. 39. 1900. p.187-90. pl.10-11. 

 Same, Mus. rep. 54 (for 1900) 1902. 3:187-90. pl.10-11. 

 Hall. Observations upon the Genera Uphantaenia and Dictyophyton, 

 with notices of some species from the Chemung group of New York 

 and the Waverly sandstone of Ohio. Mus. rep. 16 (for 1862) 1863. 

 p.84-91. 4pl. 

 Hall. Descriptions of the Species of Fossil Reticulate Sponges consti- 

 tuting the Family Dictyospongidae. Mus. rep. 35 (for 1881) 1884. 

 p.465-81. pl.18-21. 

 Hall. Note on the Occurrence of the Dictvospongidae in the State of 

 New York. Geol. rep. 6 rfor 1886) 1887. p.36-38. map. 

 Map showing geographic distribution of Dictyospongidae in Steuben and adjoining 

 counties, 33x26cm. 



Hall. New Forms of Dictyospongidae from Rocks of the Chemung 



Group. Geol. rep. 9 (for 1889) 1890. p.56-60. Same, Mus. rep. 43 (for 



1889) 1890. p.258-62. 

 Hall & Clarke. Memoir on the Palaeozoic Reticulati^ Sponges constituting 



the Family Dictyospongidae. Mus. mem. 2, 1898. 35Cp. illus. 70pl. 



Same. Ptl, Geol. rep. 15 (for 1895) 1898. 2:741-984. illus. 47pl. Pt2, Geol. 



rep. 16 (for 1896) 1899. p.341-448. illus. pi. 48-70. Same, Ptl, Mus. rep. 



49 (for 1895) 1898. 3:741-984. illus. 47pl. Pt2, Mus. rep. 50 (for 1896) 



1899. 2:341-448. illus. pl.48-70. 



Contains a bibliography. 



