Supplement to Dana’s Mineralogy. 357 
ses by another not yet completed, von Hauer’s must be erron The method 
adopted by yon Hauer allows of too many uncertainties to be free fr from houbh—1] 
Boractc Compounns [p. 3 rag bg Boracic compounds of the Tusean La- 
— — Am. J. Sci, [2], xix, 
e [p. 327], from fable pee Oberschaffhausen in Kaiserstuhl— 
E. moles obahied 3 in an analysis (Ann. Ch. u. Pharm., xci, 229): 
K 
Si kl Ca Mg "Wa 
43085 29: 8 12°551 ort 3'152 0398 11:000 = 100114 
corresponding 1 to Rs Sie Br: oe H. The oxygen ratio afforded by the analy- 
sis for R, ®, Si and H7 is, : 5-18: 2-22, Specific gravity 2 2246 ; hardness = 6; 
when Rdintens pec ty in pick riatic acid. * 
Bronentarpire.—Occurs in Por a pa of the regular octahedron and dodeca- 
hedron: L, Seiftann. (Communicated.) 
Bavcrre [p. 133].—Add to the locality in the Mineral ogy: occurs in Texas, Penn- 
Rg an en gured on p. 133 was from Low’s Mine+in ‘Temas a and not 
Cacoxens [p. 424]—Analysis by von Hauer (Jahrb. geol. Reichs. 1854, 73) : 
B Fe Ca H (lo per > mr Insol. in mur. wey 
1856 45:05 trace 363 = 981 
poate | Yow insoluble portion, von Phat Steinmann’s and Richardson’s an 
are as fi 
£ 1963 Fe phi: TL 32°72, von Hauer. 
4 * a8 8 32°38, Steinmann. 
3. 82:19, Richardson, 
giving alike the fo: — Fee $+12H = spt adt acid 21°17, sesquioxyd of iron 
47-07, water 31°76=100. 
Catcrre [p. 435, 508.]—Analyses of different limestones of the Tyre, se pe yon 
Hubert, Jaleb, dey cook Reuhe i, 729, and J. f. pr. Chem., Ixii, 225 Also 
analyses $e limestone and dolomite from the Saltz Alps, by v. Lipold, haa pr. 
Chem., 228. 
A liar earthy calcareous rock from the tufa of Pico Crux, Madeira, afforded 
E, Schweizer 6 f. pr. Chem. Lxiii, "201), 8 large — of silica in the soluble 
state. The fo Ghenta were the results of the analys 
Si MeG Gad Be, be = Organ. rs H 
20:38 “3 5 cede 4°76 10-00 oT = 9048 
The 5°39 p. c. of magnesia are re; mon i bination with silica. 
The limestone of Canical, Madeira. which is a modern formation of caleareous 
sands containing shells mainly of existing species, according to the same analyst, 
Consists of 
Cad s429, Mg@ 5-48, Phosphates 1°00, nitrog. org. subst. 4°66, H 2°41, Sand 1:48=99°32 
wags [p. $16].—Analysis by v. Hauer eh oe, met. No. 12}: 
FL i 
8615 ea 0-87 20°76 133 rd 74 mt 10028 
tale ponding’ to # Sit1;H. Orystallization trimetrie ; in groups of acicular crys 
a ee lyfis Fenticalwith that of alanine —o J 
mineral associated with challite (see p. 326 of 
a ra Neo, telo agt nee i ard yon Hauer (Kenngott’s Min. Notiz., 
s Mn K__ ign 
44-1] 1090 ies & ie trace trace adage 
eerie i, Nome op tho ratie 49:12:10 acon ie 
6363 e 
much neare 20 21:38 sgt Von Po oo te all dy A lek 
Grou fp. 88) of chiolite, from “5 ie eee 
Pe ‘measured by Kenngott (Sitzungsber., xi, 980 The form, ac- 
ite Ul kate the acute 
