386 Miscellanies. 
occurred.” Why were the wires changed, unless with the i impression 
that a particular something, connected with the nature of the wire, 
might be concerned in producing the effect? I cannot pass over the 
letter from which I take that extract, without remarking on the great 
want of courtesy on Mr. Sturgeon’s part in sending you an account of 
experiments made for the Electrical Society, the date of his communi- 
cation being a week antecedent to the day when they were read before 
the Society. 
In conclusion, I would advert to a slight error into which Mr. Stur- 
geon must have fallen in his over-anxiety to be correct: he tells you 
the zine was amalgamated ; lest your readers should, in preparing a 
battery of this kind, be led to incur the trouble and expense of this, I 
would remind them that the zinc was in the condition in which we re- 
ceived it from the workmen. 
_ With every apology for trespassing so much on your time and ef 
ed pages, ve me, silica dias obedient servant, 
heaters : Cuartes V. Warns. 
2. Mineralogical Notices, by Dr. Lewis Feucktwanger, —The in- 
defatigable mineralogist, Breithaupt, has, according to Berzelius’s an- 
nual report for 1839, discovered eight new minerals: viz. 
1. Trombolite, (Fg0ugos, numb, stiff,) a phosphate of copper resembling 
an opal from Retzbanja, Hungary, of a sp. gr. = 3.38 to 3.4; is of 
green color, opaque, and conchoidal, vitreous fracture ; according to 
Plattner’s analysis, it appears to have the formula Cu2P+ 16H. 
2. Allomorphite, a sulphate of barytes, containing 2 per cent. of sul- 
phate of lime, of papillary form, and found in an ochre mine near 
Unterwirbach, Duchy of Schwarzburg. 
3. Anauxite, (avav§ys, not growing larger,) from the suiannicst 
Bilin, of volcanic formation, resembles in appearance the Pyrophyllite, 
but on heating does not swell but peels off; is translucent on the edges, 
dark greenish white, fine granular, foliated fracture, sp. gr. 2.264 to 
. Contains silica 55.7, and water 11.5; the balance is alumina, 
ealcia, and protoxide of iron 
4. Polyhydrite, a silicate of oxide of iron from Breitenbrun, Saxony, 
is of a hepatic color, vitreous lustre and opaque, sp. gr. 2.1 to 2.142 ; 
Contains 29.2. per cent. of water. 
‘5. Serbian or Miloschin, forms a protruding layer in a mountain in 
Servia. Serbian i is blue or bluish green, acquires a lustre on rubbing, 
4 ‘and sp. gr. 2.131; it crumbles by water 
with a noise ; it containg principally alumina, less silica, oxide of 
chrome, a wits of magnesia, and 22. 8 water’ 4 
