58 Scientific Intelligence. 
is a small coral-like —s referable to the genus Verticillopora, 
an Upper Silurian form, The limestone includes besides, a ae ry 
fragments of brachiopods and of a sponge-like asec: with 
square meshes. All of these fossils are more or less penetrated 
with a greenish sweat — fills = cavities of the oe 
of ee are solid and calcareous throughout, in which respect the 
specim n differs from that from New Brunswick, described in this 
Pee SI a eo 
. Dawson, to” 
whom we owe thane observations, supposes that in both cases ae 
infiltration took place while the remains were still recent. 
Decalcified surfaces of the limestone show similar oo 
to those presented by the New Brunswick specimens ; the casts of — 
small fae like Mirschisonia, two millimeters in length, are in 
s perfect. The limestone is nearly pure, with the excep- 
tion fe a Tittle fine valldw ochreous mud, which is insoluble in dilute 
ydrochloric acid, and remains suspended in the solution, but is 
= 
This equals about three per cent = the weight of the limestone. 
n 
Is analysis by Mr. Sterry Hunt in the manner described for the 
ew Brunswick mineral shows that it scarcely differs from this 
pike in being more hydrated and almost identical with jollyte. 
It gave, after deducting 21-0 per cent of insoluble sand, the fol- — 
lowing composition for one bundred parts: Silica 35°32, alumina 
22°66, protoxide of iron 21°42, magnesia 6°98, potash 1 ‘49, soda 
0°67, water 11°46 = 100-0 00. 
teeth already ‘Abate is sidejasine of two or more individuals; — 
little hope is entertained, however, of finding a perfect skeleton. 
3. Fucoids in the Coal measures of Towa.—Prof. Wurre, in his 
“ Geology of Towa” (vol. i, p. es notices the occurrence of forms — 
identical with or allied to Cau ulerpites marginatus, in the Lower — 
Coal-measures of Wapello county, Lowa, and of other forms, more — 
- i indistinct, in the higher portions of the series (see p. 281, _ 
F. H. B. 
4. Phosphatic Sand in South Carolina.—Prof. C. U. SHEPARD — 
= described a deposit of sand over the phosphatic nodular bed — 
f£ Stone River, which has resulted from the wear of the latter by 
angie waters, and in some places is at least six feet thick. A portion 3 
