312 General Notes. [ March, ; 
ox, deer, etc. This part was nine feet thick in the course of the | 
new channel cut for the Orwell river. Fishermen frequently bring _ 
up lumps of peat. Trunks of trees stand at Helm Searf, Norfolk 
This confirms the theory of the marshy conditions prevalent pre 
vious to the submergence that converted Britain into an island 
Professor T.R. Jones, in the fifteenth of a series of articles upon 
the Paleozoic bivalved Entomostraca, in the Annals and Mage 
zine of Natural History, describes a carboniferous Primitia, In 
the same magazine (Sept.1882), Dr. J. C. Hinde describes several 
fossil Calcispongie. n 
MINERALOGY.! 
ANALYSES OF SOME VIRGINIA MINERALS.— Professor J. W. Mal 
let has communicated to the Chemical News some notes of work 
done by students at the University of Virginia upon Americal 
minerals. i 
W. T. Page has analyzed an allanite of unusual chemical cot- 
position from Bedford county, Va. It occurred as a compat 
black mass, with pitch-like luster, spec. grav. 4.32, and the unt | 
sual hardness of nearly 7. Its composition is as follows: 
‘SiO, AIO, C0, DLO, 1a,0, FeO, FeO n MENE 
2670 - 6.34. 3476 16:34 -103 3.21 4.76: SS 
wo MgO CaO  Na,O_ K,O H,O i 
0.52 0.54 2,80 0.49 0.55 1.99 i 
The very large proportion of the cerium metals present e 
50 per cent., or double the usual amount), and the large exce® 
.didymium over lanthanum are peculiarities which may J A 
being considered as a new variety of allanite. u 
B. E. Sloan has reëxamined the helvite of Amelia C. H, ™ 
already refered to in the NaruraLıst. Having at his comms a 
larger amount of pure material than Mr. Haines possessed A ii 
analysis was made which conforms more closely to the 10mm 
adopted by Rammelsberg. The analysis gave : 
SiO, NO MnO FeO AO Ma. S i 
31.42 10.97 40.56 2.99 0.36 8.59 49 = 99.88. = 
W. H. Seaman analyzed a pale hyacinth-red garnet ro 
same locality, which, like the other recorded analyses An 
variety of garnet—spessartite, or aluminum-manganes¢ yal 
shows an anomalous deficiency of triad as compared with e 
metals. ality, 
m the same ee ey 
the analysis closely corresponding to the tri-silicate "el 
> b a A 
! Edited by Professor H. CaRvILL Lewis, Academy of Natural Scien ; : 
Id be sent- 
ia, to whom communications, papers for review, etc., shou 
