* 
Q72 Scientific Intelligence. 
at Kefoum-Thaboul, near the frontiers of Tunis, occurring in argilla- 
rates 
eous schists connected with sandstones and conglomera 
netic iron ore abounds in the mountains Bou Hamra, the small 
chain getty and to the north of lake F’zara. To the north of the 
place entioned hee. is an entire mountain, the Mokta-el- Hadid, 
care that tee were a mined. 
. Emery in Asia Minor.—M. Tchihatcheff, in his recent explora- 
= in Asia Minor, has brah to light extensive beds of emery in 
the western portions of this country, particularly he wees the ruins of 
Stratonicea | in Caria and Smyrna. 
‘asst ‘prints ; by Tce Marsu, gen a letter to the Senior 
Editor, ia ‘Greenfield, Mass.; May 20, 1848.)—I have for a long 
time thought of sending, you some acc Saco: A oy cealro'gnn lads 
rocks of this valley, and my success in ining fossils, but have hesi- 
from reasons unnecessary for me to state, knowing as you do, 
that I am an unlearned, laboring man. 
You will recollect that the first, specimen of fossil footprints of birds 
ever brought into public notice in this country, was the slab I discovered 
among the flagging stone, while laying the sidewalk» near my house 
which Dr. Deane first described to President Hitcheocks, as the fool: 
prints of a (ems that nee I wee felt an. increasing interest in 
the subject, he amd ou each year, in, searching for 
these met oo you ee “i able to judge of my success, 
a hap ede a a collection more than ign hund 
with the foot. very thick and heavy in proportion 
to the ong ‘The most perfect specimens I haye been able to obtain, 
from Tyrner’s.Falls,.or its immediate peighborhood ; they, not only 
show the joints. i the toes, btn some there perfectly exhibit the 
impremweh, of the skin. 
_T have obi ained also Valumple spe at other r places; for instance, 
a very i i . t ne slab at Soub fi oe found i in the highway leading 
to Amhe mile and, half north of the Seminary. It is in a coarse 
gray fads cut and used for 
purposes ; the quarry was 
rpose, and a few tracksediscovered before my atten: 
tion was called to it; the beds containing the tracks lie some three 
feet deep, and are, nearly horizontal... I quarried a small section, and 
turned up a slab seven or es feet | in = _ one and a half in 
breadth, having on its under. su ce fifteen o enty beautiful foot- 
prints of'a number d different = in relief. or ee thought by taking 
up a large section, I should obtain all the tracks I desired; but to my 
great disappointment, afier several days la abor in getting doen to the 
me layer, not the slightest appearance of a footprint was to be seem: 
Ma It _ examined the location more particularly, and to my mind it was 
