486 Scientific Intelligence. 
fossil botany receives new illustrations from American specimens. 
Much light is thrown upon the Cordaites group, a class of Car- 
boniferous plants hitherto a great puzzle to botanists. We shall 
notice this rich contribution to science more in detail when we 
have received the volume of descriptions. 
seek obi aur Mi — Russland, von Nikolai von Kok- 
scharow. Vol. viii, pp. 177-384, vol. ix, pp. 1-32.—Mineralogists 
sor Kok- 
described : mie: pyrite; species of the mica group; 
rb dad (a new species near xanthophyllite); perofskite; eu- 
alyte 
4, Neues Jahrbuch fir pee esis bs Geologie and Paleontolo- 
gie.—The long known and highly valued Jahrbuch fir Mineralo- 
ie, etc., has passed into the a of a new corps of editors: 
rofessor E. W. Benecke, in aah ne oe have smi of the 
papers in the different pass hen covers 255 pages The many 
workers in science who have used the Jahrbuch in years past, will 
= for it a long-continued career of use 
5. Brief notices of some recently described Minerals: — Huntilite. 
Described by Prof. Henry Wurtz, as occurring in two varieties. 
The most abundant variety is amorphous, oft ten porous wae rum- 
hind dark slate-gray, or almost black in color, and entirely dull in 
r. The other kind has a lighter slate-color, a crystalline 
a re, aa probably one cleavage; it is intimately associated 
with calcite. The hardness is 2°5; the streak is bronze-color; the 
mineral is sub-malleable. Analyses of the two kinds gave the fol- 
1 results : 
1. Amorphous. 2. Crystallized. 
As Sb § A 
1. 21°10 3-33 0-78 1-04 59-00 ps oe red 3 ok ce eee G.=T4T 
2. 23°99 4°25 1°81 1:11 44-67 7-33 2-1] 8°53 3-05 0°33 1-65= 98°83 G.=6-27 
The mercury is believed to be present as amalgam; the sulphur 
as pyrite; after the deduction of these, the following ratios are 
obtained, "the arsenic and et being taken pate and all 
the metals combined, a rding tot :—As: R= 
able Ristdny and Mi: ee ro: "Fan 25, 1879. 
