DEc., 1908. MINERALOGICAL NOTES 145 
Combined with the pyramids are two scalenohedrons, one of which 
Meaestie syinbol 20, 11. 3]. 11 (+ 9; R #}) and the other occurs be- 
tween this form and «. Although the latter is a well-defined plane 
no satisfactory reflections could be obtained from it for determining 
its symbol. Inasmuch, however, as its zonal relations are plainly 
shown on the crystal, it is represented in the drawing, Fig. 1, Pl. XLIX. 
The form 20. 11. 31. 11 is new to calcite, and through the kindly 
advice of Dr. Charles Palache, the letter »: was adopted for ic. The 
form is so close to the common scalenohedron v (2131) that it would 
seem probabie that the latter symbol was the correct one, but the 
measurements obtained allow no other conclusion than the symbol 
above chosen. 
The following are some of the measurements obtained: 
Observed Calculated 
Gea) =. (4483) A (4843) Se Aheeay eat 54054 O. 
Gece ee (4483 ) A (8443) meP 'A% 40! pie teh 
fe eS. G10. 3) A. (8-76.88. 3) = 58° 28! . 58°28’ 
jeer (5.8.16, 3) A. (76.8.8.3) = 58° 24’ g877285 
her Pee O. i.l0,03))) > COLI) = Sieur er tau Ga po Ae 
Ci ty =~ (4483) A (1123) pes te 8038) 
Beene ue (1123) A (1123) Ba SH SOTO! 
Sehr = (4483) A (rolr) mae aA bah? 1h 82: 
Peper ie (8443) Ae roOlr) oe eae eA ede eed 
eee eee ti); £1 ))¢A...(20, 34.11. rt). = 72° 44" ye aay 
Peeetreeeteo tt. 31.11) A. (4x. 11, 20.11) = 37°27’ eens 
Prost vile 
WILCOX STATION, WYOMING 
Crystals of epsomite from the above locality were described by 
one of the authors in a previous publication.* It may be here noted 
that the figure there given should be turned at right angles to its 
position in the text in order to be correctly placed. Some time 
afterwards the late Prof. W. C. Knight, to whom the acquisition of 
the first crystals was due, kindly furnished about a dozen additional 
individuals which were somewhat more modified than those first 
described. 
The habit of these crystals is stout, prismatic. The largest crystal 
was 31 mm. (1 \% in.) long in the direction of the vertical axis and 
* Pub. Field Col. Mus., Geol. Ser., Vol. I, p. 228. 
