232 Miscellaneous Kotices in Mineralogy, Qeology, fye. 



be afforded at less than half the expense of that. It will, 

 therefore, probably soon come into general use throughout 

 our country, whenever such cement is required. Mr, 

 White has some specimens of the stone which constitutes 

 the principal material of his discovery, which he intends 

 presenting to you. 



4. Micaceous Iron ore, for oligiste of Many, 



We have recently seen this ore in very thin delicate 

 plates from Virginia, and from Mr. Lane's mine in New 

 Stratford, Conn. That mentioned (pa. 50, Vol. I.) as oc- 

 curring near Bellows Falls on the Connecticut river, we are 

 informed by Professor Hall, is found at Jamaica, in Ver- 

 mont, twenty miles directly west of Bellows Falls. It is a 

 remarkably beautiful but very fine grained variety — in its 

 structure much resembling the finest grained Dolomite of the 

 Alps ; the plates however, although thus minute, are dis- 

 tinctly visible, but their coherence is so feeble that they 

 crumble easily between the fingers ; the grains are not af- 

 fected by the magnet. We have recently received a spe- 

 cimen of this fine mineral from Dr. I. A. Allen, of Brattle- 

 borough. He states that it is found in Ball Mountain, which 

 rises five hundred feet above the water in West river. Dr. 

 Allen will supply specimens by exchange or otherwise. 

 From the adhering matter, this ore would appear to be im- 

 bedded in mica slate. 



5. JVotice of the Salem Sieniie, Jasper , Amygdaloid, S^c, 



The uncommon beauty of the polished specimens of this 

 rock, induce us to give the following particulars derived 

 from the Rev. Elias Cornelius. 



The specimens accompanying this were taken from a 

 rock which is found in Salem, Mass. near the eastern ex- 

 tremity of the peninsula, or neck of land upon which the 

 town is situated. 



The rocks in its neighborhood are either pure granite, or 

 that variety of it called sienite, the hornblende of which is 

 diffused in different proportions, from a few specks scarcely 

 discernible, to very considerable quantities. 



