ABSTRACTS OF PAPERS 201 



UNATTACHED SIMPLE PALEOZOIC CORALS 

 BY AUGUST F. FOERSTE 



(Abstract) 



Most simple Tetracoralla show no attachment areas. In many species only 

 occasional specimens show attachment areas. Most attachment areas are 

 too small to have supported the corallum except during its immature stages 

 of growth. Mature coralla of most species were free. A few species with 

 flattened sides apparently were adapted for drifting along the bottom of the 

 sea with changing currents. Some of these were provided with opercula. 

 Other forms may have lived with their apical ends more or less buried in 

 mud or sand. Some of -the radiciform offshoots from the epitheca may have 

 served to anchor the specimens in loose mud or sand. Species represented 

 only by attached specimens have relatively large attachment areas. 



Tiie paleontology and paleogeographic significance of an isolated out- 

 crop of Devonian limestone 60 miles south of Quebec formed the subject 

 of the next paper, presented by the author. 



DEVONIAN LIMESTONE AT SAINT GEORGE, QUEBEC 

 BY THOMAS H. CLARK 



(Abstract) 



On the Chaudiere River, about 60 miles southeast of Quebec, there is a 

 small outcrop of Onondaga limestone with an abundant coral fauna. This 

 limestone has been mentioned in geological literature but twice : first, by 

 Logan, in 1863, and again, by Ells, in 1888. In company with Dr. P. E. 

 Raymond, the writer visited this outcrop last summer and collected fossils 

 from it. These are described and their significance with respect to the 

 paleogeography of Onondaga time is discussed. 



Stratigraphic results in the Paleozoic rocks of China obtained by Dr. 

 A. W. Grabau, paleontologist of the Chinese Geological Survey, were 

 given in the final two papers of the morning session, read by the Secre- 

 tary in the absence of the author. 



AGE OF THE COAL BEDS OF THE KAIPING COAL BASIN, IN NORTHEASTERN 



CHINA 



BY A. W. GRABAU 



(Abstract) 



In the Kaiping coal basin of eastern Chihli Province, north China, thirteen 

 coal seams (bituminous) are recognized. The lowest of these (number 13) is 

 35 centimeters in thickness, and its roof is formed by an impure limestone 

 with crinoidal fragments, 30 centimeters thick, above which lies a massive 

 argillutyte, often pyritiferous and containing a marine fauna of Lower 



