Geology and Natural History. 311 
in more elevated gravel banks, called “dry washings.” =k. k 
3. Serpentine Marble—A beautiful variety of mottled serpen- 
tine marble is worked at a point on Broad Creek in Harford 
of the region. The chief bed is about 500 feet thick, and is 
traceable by its outcrop for about 1500 feet. 
4. Gymnospermy of Conifere ; by Dr. L. CELaKovsxry. 
a 
here specified, and becomes a leafy branch. Dr. Engelmann, in 
this Journal, three years ago, gave a confirmatory account of an 
partially united, next forming a seal cleft or notched apex, 
then an entire carpellary scale, in the axil of a normal bract. _ 
Celakovs avi Spruce monstrosity for him- 
ky ing now seen the Spruce monstr 
self, adopts the inevitable conclusion, and are it well to the 
i e 
eclares that the 
