242 Localities of Minerals. 
have received specimens illustrative of the geology of that 
region. Among them is limestone from Stockbridge, crystallized 
in large plates and rhomboids, almost white, and still fetid on 
being rubbed, which is very different from most fetid limestones, 
which are dark colored, and even black, and do not belong to 
primitive formation. 
Molybdena.—In Pettipaug, Saybrook, Connecticut, molybdena 
occurs. It is mentioned in the Review of Cleaveland’s Mine- 
ralogy, and is here cited again for the purpose of pointing out 
its locality more exactly. It is found about half a mile to the 
E. of the Turnpike leading from Saybrook to Middletown, on 
the first road on the right hand above the Turnpike gate, near 
the house of the widow Pratt. It is not far from Pettipaug 
meeting-house, in a northern direction. 
Beryl.—tin egos Connecticut, are found many beryls, and 
une: n size; an account of one of the most remarka- 
ble localities i is donee. in the following memorandum from the 
Rev. Mr. Mather, to whom we are indebted for specimens. 
' “The place in which the beryls are found is in the town of 
Chatham, about one mile and a half north from Middle-Haddam 
landing ; about half of a mile S. W. of a large hill, on which is 
the cobalt mine. The rock in which the beryls are contained is 
granite; the parts of which are very large, especially the fel- 
spar and the mica. Large masses of shor! are also found in thesé 
rocks. Beryls have also been found in other parts of Middle- 
Haddam, amongst rocks of the same description. The greatest 
diameter of the largest beryl is four inches; the least three 
inches. The beryls are numerous, and of different sizes 
though few are less than an inch, or two inches in diameter. 
The length of the longest beryl is five inches.” 
Clay.—Near Delhi, New-York, a few rods from the Dela- 
ware river, are found beds of clay, of which specimens have 
been transmitted by Mr. John P. Foote, of New York. We 
are of opinion that they are not porcelain clay. 
