bichowsky: an unusuaIv sulfur crystal 129 



a Corrected value. Goldschmidt gives the erroneous value 74° 39'. 

 f> New calculation. 

 « New symbol. 



The symbol ' indicates Va'- 

 ' Rome; DE l'IslE. Crystallogr. i: 289. 1783. 

 2 MoHS. Mineralogy, Edinburgh 3: 52. 1825. 



^ ScACCHi. Mem. Geol. Campan., Rend. Ac. Nap. (1849), 103; Zts. D. Geol. Ges. 

 4: 168. 1852. 



* Brooke-Miller. Mineralogy 109. 1852. (Quoted from Brezina. «) 

 5 Zapharovich. Jahrb. Geol. Reichsanst. 19: 229. 1869. 



* Brezina. Akad. Wiss. Wien. 60: 539. 1869. 



" Friedlander. Min. Sammlung Strassburg, 262. 1878. (Quoted from Dana, 

 System of Mineralogy.) 



8 Fletcher. Phil. Mag. V. 9: 186. 1880. 



9 Dana. Amer. Journ. Sci. 32: 389. 1886. 



1" MoLENGRAAF. Zeitschr. Kryst. Min. 14: 45. 1888. 



'^ Busz. Zeitschr. Kryst. Min. 17: 550. 1890. 



'- Weed and Pirsson. Amer. Journ. Sci. 42: 401. 1891. 



1' PELIKAN. Tscherm. Min. Petr. Mitt. 12: 344. 1891. 



''' Busz. Zeitschr. Kyrst. Min. 20: 560. 1892. 



'^ Schmidt. Zeitschr. Kyrst. Min. 29: 210. 1898. 



i« MiLLOSEViCH. Atti Accad. Lincei 7: 2 Sem. : 249. 1898. 



1' Goldschmidt: Quoted in Krystallographische Winkeltabellen, Berlin, 313. 



1897. 



18 BuTTGENBACH. Ann. Soc. Geol. Belg. Liege (1898), 25 Mem. 73. 



