Syiioiiyiiiy of Ptycliosl^irn Sc.vf>!icata. — Greyer. 17 
county, New Mexico, there occurs one somewhat crushed spec- 
imen of Ptychospira the general expression of which corre- 
sponds in every respect to P. sexplicata. The exact horizon 
of the specimen is not known since the lot contained specimens 
of the P)rachiopoda of the two beds, No. 7 and No. 8 of Spring- 
er's section. * 
BEDFORD CYRTOLITE. 
By Lka McI. Luquer, New York. 
The cyrtolitc from Bedford, N. Y., was found in the great 
pegmatite vein which constitutes the feldspar quarry owned 
by the late P. H. Kinkel. This region is one showing evidences 
of a violent dynamic action, and lies in the rather limited area 
of "augen-gneiss" described by Luquer and Ries.t 
The specimens were obtained from four different pockets, 
included between feldspar on one side and muscovite and 
smoky quartz on the other. 
The mineral occurs generally massive, filling the veins or 
pockets to a width of about one and a half inches, with a tend- 
ency to form rough tetragonal forms with curved faces on the 
side in contact with the mica and quartz. 
A careful examination shows grea«t lack of homogeneity 
and the massive material varies in color from dark brownish- 
black, with pitch-like or adamantine lustre (in what appears 
to be the core portion) to a lighter grayish-brown with much 
less marked lustre. The color of the crystals varies in the 
same way, depending' on whether they are fresh or altered. 
In contact with the feldspar the color is chocolate-brown 
with brighter lustre. 
The specimens, especially the lighter colored portions, quite 
generally show the presence of yellow earthy or scaly uraconite. 
yielding tests for uranium and sulphur. 
The occurring forms of the crystals are the unit pyramid 
(in) in combination with the second order prism (100). pro- 
ducing a rhombic-dodechedral aspect. The pyramid faces are 
strongly curved and the crystals show a marked tendency to 
• American Journal of Science, vol. sxvii, Feb. 1884-. Pape 97-103. 
+ The "Augen-Kneiss" Area. Pegmatite Veins and Diorite Dikes at Bedford, 
N. Y., by L. McI. Luqurr and H. Riks. Am. Gbol , vol. xviii, Oct., 1896. 
