026 | 3 General Notes. [Nov, 
posited by the Joseph’s Coat Springs and other geysers, and is 
-also often found in little nodules in the cavities of this sinter. — 
An analysis of the purified scorodite yielded Mr. Whitfield— 
Fe,0, As,Os H,O 
34:94 48.79 16.27 | 
Analyses of the waters of these geysers show a small percentage 4 
of arsenious acid. eusch! has examined the crystallized — 
kaolin from Denver, Colorado, to which Cross and Hillebrand « 
first called attention? He declares it to be triclinic and not ortho- 
rhombic as Hillebrand supposed. A. Kenngott3 describes two 
peculiar crystals of gypsum from Poland, Ohio, and calls atten- 
tion to a new formula for ¢anzalite from Dakota, based upon the — 
analysis of Schaeffer,t published a few years ago. 4 
BOTANY. 
4 
$ 
The Genus Geaster.^—Dr. G. B. De Toni, of the Botarial 4 
Institute of the University of Padua, has lately made a Care 4 
revision of the genus Geaster. Accepting, with Fries, the te 
nition of the genus as proposed by Micheli in 1729, after mucl 
reduction, he increases the number from fourteen, as enume’ ell- 
by the illustrious Swedish savant in 1829, to forty-eight “te 
authenticated species. Making a careful study of the ne 
features of the species, he has been enabled to arrange them 
_ Seven quite distinct and fairly recognizable sections, as lon 
1. CoLtumnati.—Juner peridium supported on on several pedic a 
This section includes the singular G. coliformis picis To 
many mouths to the inner peridium, and G. columnatus — 
from Chili, having but a single orifice distinct 
= 2, Fornicati.—Outer peridium separating indo AUE T E 
strata, one obversely Jornicate. d the 
is contains three species,—G. fornicatus Huds, 3 We 
little-known G. radicans B. & C., and G. welwitschii Mont. to 
‘May here remark that this fibrous lowest am iis 
baie earth exists in G. Ambatus Fr., and perhaps ! 
EA 
CL EAE ee E Ee s 
= 3. CUPULATI.—Outer peridium augmented by @ 
often irregular cupule about the base of the inner peridium incertailt 
This section contains only G. triplex Jungh. and a 
Fed duplicatus Chev. We have observed this basal me 
other species of Geaster; it occurs as a mere inci . 
away of the lower portion of the inner fleshy he foi 
‘outer peridium. Specimens of G. duplicatus are are to 
$ G. 
‘Ne paa. f. Min., etc., 1887, ii., p. 70. <Da page 
5 ; Edited by by Prof. CHARLES E. BESSEY, Lincoln, aay 
S,, No. 20: 4 
1884, xxviii.» 
uctore Dr. G- P 
7 P ROCER No. 34, Avril, 1887. 
