ROGERS | Minerals of the Galena-Joplin District. 509 
+R 7, +4Ri, 2P2, —5R; on the other, +R3, +R, +4Ri, 
2p?, +zk3. Of these 2P*, +4Ri and +4R2 were not ob- 
served by the writer. 
18. 1899. Cuprogoslarite, a New Variety of Zinc Sul- 
phate, Kansas University Quarterly, VIII, pp. 105, 106; Aus- 
tin F. Rogers. A light bluish-green incrustation occurring on 
the wall of a ‘‘cave-in’’ at Galena, Kan. Contains 12.48 % 
CuSQ,. 
19. 1900. Sphalerite Crystals of a Peculiar Habit, and 
with one New Form from Galena, Kan., Amer. Jour. Sci., — 
IX (4), pp. 184-136 (three figures) ; Austin F. Rogers. 
New form O0(833)8 /3-8 /3 recorded and natural etch-figures 
described. 
20. 1900. Crystal Forms of Calcite from Joplin, Mo. ; 
Publications of Field Columbian Museum, Geological Series, 
I, No. 7, pp. 281-541, pl. XXVIII-XX XI; Oliver C. Far- 
rington. Distinguishes five types of crystals. Twins with 
c(0001) and e(0112) as twinning planes. Following forms 
observed : r( 1011) +R;M (4041) +4; e (0112) —4; (0445) = 5 
MOTI) =22 ROP) Bs (OA) Ae Beil lei) ah 
2(0-20-20-1) -20; (new) 7(41538),%; v(2131),°2; w(3145)2?; 
(2134) 42. 
— 21. 1900 Annotated List of the Minerals Occurring in 
the Joplin Lead and Zinc District, Kansas University Quar- 
terly, [X-A, pp. 161-165; Austin F. Rogers. Gjives a list of 
forty-four minerals from the district, with a description of 
those not previously noted, which number fourteen. 
33a—Vill 
