472 MINERALS IN THE [December, 



Manganesian Garnet, Grenat Majtganesie , Brogt. 

 This mineral has lately been discovered by Mr. Jes- 

 sup, one fourth of a mile west of the Ridge Road, and 

 about nine miles from the city. Colour, brownish red. 

 It has only been discovered massive. 



Staurotide. Staurolith, W. Staurotide. H. 



On the Wichicon, about eight miles from the city, a 

 large, steep, and uncultivated hili, formed by almost per- 

 pendicular gneiss rocks on its eastern side, contains a 

 large quantity of this mineral, in single crystals of a'dark 

 reddish brown colour, and resinite appearance. Form a 

 hexagonal prism, terminated by diedral summits. It is 

 associated here with dodecaedral garnets and small quanti- 

 ties of cyanite. It was first observed here by Mr, Godon. 



BeryL Edler Beril. W. 



This mineral is found on Mr. C. Peak's farm, near 

 Germantown. Colour, yellowish green. I have lately 

 found some specimens of it, in a quarry of gneiss belong- 

 ing to judge Peters, about three hundred yards above the 

 upper bridge, on the west side of Schuylkill. Colour of 

 one part, yellowish, of another, green, and puts on more 

 the appearance of emerald. 



Tourmalin. Schorl, W, Tourmalin. H. 

 In most of the granite and gneiss rocks of our neigh- 

 bourhood, we find tourmalin, generally crystallized in 

 long prisms, singly and in bunches, sometimes, but 

 rarely, terminated with three or more faces, and always 

 black. More particularly we find it, at judge Peters* 

 quarry, and Sheridan's quarry, near the upper bridge, as 



