142 Scientific Intelligence. 
this and other collections made, but there appeared to be none. 
They also discussed the question of the deposition and extension 
the Lias as represented at Eglinton Island and Spitzbergen. 
—Lbid. 
3. Geological Survey of Pennsylvania. Report of Progress in 
the Beaver River District of the Bituminous Coal-fields of West- 
ern Pennsylvania, by I. C. Wurre. 338 pp., 8vo. Harrisburg, 
8.—The bituminous coal-fields of the district here reporte 
upon are carefully described, their coal-beds, stratification, fire- 
clays, oil-san oil-wells, and other points of ge eological 
interest, and jlinstrated by three geological maps of parts 0 
Beaver, Butler and Allegheny Counties, aud twenty-one plates of 
vertical sections. Mr. White also describes the surface features 
of the region, including the river valleys, _ drift, and the height 
and constitution of the terraces. Along the Ohio and Big beaver 
the terraces are continuous and have the following heights above 
the river: Ist (lowest being the present flood-plain of the river) 
30 to 40 feet; 2d, 60 to 80; 3d, 120 to 130; 4th, 200 to 220; 5th, 
280 to 300 feet. The 2d and 3d are wide and consist in part of 
coarse gravel and cobble stones. The 4th, on the Big Beaver, 
has at top a deposit of isi ne white unctuous clay. The fifth 
is seen a few miles below Pittsburgh, and is gravelly near its top. 
t New Brighton, see terraces have the following heights 
reat and possibly over 200 feet. He shows that the Beaver 
Creek for several miles above its mouth does not flow in its old 
channel ; and that this old channel was more than 100 feet deeper 
than its present bed, an iron rod having been driven down to this 
depth without reaching rock; and probably it is 200 feet below, 
since, as stated by Dr. New wherry, the oil-wells bored at the junc- 
tion of the Mahoning and Shenango, found no rock for 150 feet 
below their present a 
e volume commences with a Preface of much interest by 
rofessor Lesley, the pratinbons of the survey—the chapter to 
which he alludes in his communication published on page 68 © 
this volume. It contains also a description, by Lesquereux, of a 
Fungus found on a Sigillaria in a bed of cannel coal, in Beaver 
County, Pennsylvania; he names it Siteonconphe Sigi Maric. 
