1883.] Mineralogy. 651 
on its banks, between Zarizyn and Sarepta. Elephas primigenius, 
Bos priscus, Elasmotherium, Camelus knoblochi and several ante- 
lopes, stags, etc., are among the contents. Remains of animals, 
the bones of which have apparently been broken by man, to- 
, gether with many stone implements, have been found in the 
crevices between the blocks of lava underlying a pumicestone 
pit near Andernach, on the Rhine. As the pumicestone filled 
the crevices to a depth of two or three feet, and the bones, etc., 
were beneath this filling-in, it is believed that there was a settle- 
ment on the spot, the food-remains from which fell into the crev- 
ices defore the deposition of the pumicestone. On the Middle 
Ural M. Malakhoff has explored the lake dwellings of the neigh- 
borhood of Ekaterinburg, and has discovered close by Irbit, very 
interesting accumulations of bones, lake dwellings on Lake Ayat, 
and stone and bone implements in a cavern close to the Mias 
ironworks. 
SS RS a at ee eee 
MINERALOGY: 
by Damour? It occurs crystallized in regular hexagonal prisms, 
transparent and nearly colorless. Its hardness = 6.5 ; specific grav- 
ity 3.28. It has a vitreous fracture and is without cleavage. At 
first sight it resembles beryl, tourmaline or apatite. 
Before the blowpipe it loses its transparency, blanches, and 
Sives to the flame the green color characteristic of boric.acid. It 
. Tt is essentially a borate of alumina with a small proportion of 
iron. A mean of three analyses gave: 
B,O, Al,O, Fe,O, K,O 
49.19 55.03 4.08 0:70. == 100, 
yielding the formula (Al,03, Fe:0;) BOs. 
Il. Picro-epidote is a name proposed by Damour to designate a 
Variety of epidote from Lake Baikal, Siberia, which has magnesia 
* e and is infusible. It occurs in white or yellowish-white 
small crystals in lapis lazuli. Des Cloiseaux has shown that the 
stallographic and optical characters are those of epidote. 
IIT. Dumreicherite is a new mineral of the alum group described 
by Dr. C. Doeljer® as occurring in crevices in lava in the form 
of superficial crusts. It was apparently monoclinic, but had a 
. } Edited Professor H. CARVILL Lewis, Academy of Natural Sciences, Phila- 
Jeyk ja whom communications, papers for review, etc., should be sent. 
4 Soc. Min. de France, T. VI, p. 20, April, 1883. 
Zur Kenntniss der vulcanischen Gest. u. Min. d. Capverd’schen Inseln, 
