fF. Springer—Burlington Limestone in New Mexico. 97 
Art. XIV.—On the occurrence of the Lower Burlington Lime- 
R. 
stone in New Mexico; by FRANK SPRINGE 
Tue Burlington Limestone has been generally recognized as 
a well defined group of the Subcarboniferous ; but its division 
into upper and lower beds has not been favorably received by 
few feet in thickness, each containing its characteristic species, 
and these identical with those found at Burlington. In a col- 
ol 
