ELISHA MITCHELL SCIENTIFIC SOCIETY 70 
tacea Morton, which in the Chattahoochee river section is con- 
fined to the Eutaw beds, is here quite common ; and is accom- 
panied atintervals by Anomia Exogyra, Cardium and Serpula, 
the specimens collected being in each case too fragmental to 
permit of specific determination. This lower 400 feet of the 
Wilmington section has been classed by Stanton as Autaw ; 
and it is possibly the seaward representative of the Potomac 
arkose sands and clays of the sand-hill region northwest of 
Fayetteville, should these sands and clays prove to represent 
the latest Potomac. It is more likely, however, either that 
the Potomac deposits were removed from this region prior to 
the Kutaw deposition, or else that the surface of these old 
crystalline rocks was above water level during Potomac time, 
aud hence not covered with deposits. 
Underground temperatures were not taken at intervals 
at different depths while the work was in progress, ow- 
ing to the lack of suitable thermometers; but there are now 
three wells only three or four feet apart, one 1100, one 500 and 
one 100 feet deep. The temperatures at the bottom of each of 
these, as determined by the use of a Darton deep well ther- | 
mometer, were found to be 79°, 72.50°, and 68.50°F. respect- 
ively, giving a descending increase in temperature of about 
1°F. for each 100 feet, between 100 and 500 below the surface ; 
and 1°F. for each 98 feet, between 500 feet and 1100 feet be- 
low the surface. 
CHAPEL Hitt, N. C. 
NEW EAST AMERICAN SPECIES OF CRATAEGUS. 
1CONTRIBUTIONS FROM MY HERBARIUM. NO, VI. 
BY W. W. ASHE. 
Crataegus perlomentosa nu, sp. A small tree, 4-9 meters in 
height, with horizontal branches forming a round or flattened 
crown, trunk covered with gray bark broken into oblong 
1 Received Feb. 10, 1900. 
