508 University Geological Survey of Kansas. 
trict: Blende, galena, pyrite, chalcopyrite, marcasite, barite, 
dolomite, quartz, greenockite, sulphate of zinc, smithsonite, 
calcite, hydrozincite, aurichalcite, anglesite, calamine, pyro- 
morphite, and bitumen. 
12. 1894. The Minerals of the Ore Deposits, being a part 
of the Report on Lead and Zinc Deposits; Missouri Geolog- 
ical Survey, VII, pp. 448-460; Arthur Winslow. The 
following minerals are mentioned: Sphalerite, calamine, 
smithsonite, hydrozincite, galenite, cerussite, anglesite, pyro- 
morphite, leadhillite, calcite, barite, dolomite, pyrite, marca- 
site, quartz, bitumen, chalcopyrite, malachite, azurite, and 
limonite. 
18. 1894. Occurrence of Leadhillite in Missouri and its 
Chemical Composition, Amer. Jour. Sci., XLVIII (3), pp. 
219-226 (two figures) ; L. V. Pirsson and H. L. Wells. Col- 
orless to clear sea-green monoclinic crystals, with hexagonal 
aspect. Analysis shows the mineral to have the following 
formula: PbSO,2Pb-CO,-Pb(Oh).. 
14. 1894. A Study of the Cherts of Missouri, Amer. Jour. 
Sci., XLVIII (8), pp. 401-409; E. O. Hovey. Includes a 
study of several cherts from the district. This section was 
examined and analyses quoted. The so-called ‘‘tripoli’’ 
occurring at Seneca, Newton county, Missouri, is a decom- 
posed chert with very little, if any, opaline silica. 
15. 1895. Note on the Occurrence of Leadhillite Pseudo- 
morphs at Granby, Mo., Amer. Jour. Sci. (3), Deron HOUR: 
Warren M. Foote. Pseudomorphs of leadhillite after calcite 
and galena are described. 
16. 1895. Recent Additions to the Miner slow of Missouri, 
Trans, Acad.of Sei, of St. Vous) VIly pp. 26130 = Ae 
Wheeler. Adds the following minerals to the list shen by 
Leonard in 1882: Leadhillite, mimetite, goslarite, ferro- 
goslarite, amorphous sphalerite, vivianite, aluminite, and 
wavellite; most of them being given on the authority of 
others. : 
iy TSO S DOXE poe Melt eeeasani lle SOcuinanc alse 
de Mineralogie. Ina note to the French Mineralogical So- 
ciety, presenting two calcite crystals from Joplin, Pisani 
mentions the forms present on one crystal as + R3//, +R, 
