428 Scientific Intelligence. 
gives off water and becomes darker colored. Soluble in the fluxes: with 
borax in the outer flame gives a yellow glass, in the inner flame faint 
yellow, which on cooling becomes colorless; with salt of poxphors gives 
the same reactions, except that both beads are colorles . 
The powder mois tened with sulphuric acid gives off finohydrie acid. 
Be 
a 
traces of chlorine. The acid solution gave no precipitate with sulphy- 
drie acid gas; in the neutral solution sulphid of ammonium gave a color 
Jess voluminous precipitate, insoluble in caustic potash, but soluble in 
excess of carbonate of ammonia, thus indi icating the presence of the oxy 
of the cerium metals. The filtrate from the sulphid of ammonium pre- 
cipitate left no residue on evaporation and ignition, showing the absence 
of alkalies and alkaline earths. Three analyses ga 
6 i La Ce Fl O (loss) 
is 17°19 2°20 87-46 26-78 612 
2. 19°65 35°66 28-84 5-97 
3. 198 scree pte 6°96 
Mean, 17°19 2°20 36:56 27°81 6°35 9°89 
From this, Korovaeff deduces the formula 6Ladi+(€e+Ce,Fl;+2H) or 
staG- Cah 0)?-+H, which on calculation equals 6 17-28, H 240, La 37°67, 
Ce 25: 23, Fl 1-52, O 9°60—=100-00, 
approaches een te from Ma usso, described and an 
The Ki 
for this new spec = 
3. olan of ‘the Miocene Shells of the Atlantic ree i, by T. of 
Corrav.—In the last number of the Proceedings of the orig 
Natural —— of perce ore (Dec., 1862, pp- A fin Mr. 
rad has give a Catalogue which must prove an invaluable mpm | 
not only to silseconslowns et to those students of recent peed a. 
ke the shells of our coast a subject of study. The preree d 
oon shells epee vadblished, particularly those 
merous and scattered, that to collect and “xe 
Ze EL aesaesty pcadtticiairy 1 to their investigation, —would be by 
extended a work for every one interested therein to undertake for 
self, It is a subject for congratulation that this work is no 
all, by one so competent and so well —— with our Tertiary 
nz as the distinguished author of the “ Catalogue.” 
Mr. Conrad states that the Miocene of our Atlantic slope ext 7 
from New Jersey to Sonth Carolina, and he inclades in it th 
“Pliocene” of the latter State. The newer Plincesd or Pleiooee 
_ the coast rests immediately upon the Miocene, and there “abs “ 530 
rai of extinct forms between these two formations. . 
Spec sof shells are found in the Miocene, the proportion of a 
Gastero orga Sh being 1:1:° ae Mr. C. thinks that the ee 
y acknowledged to occur in this forma 
