1877.] 251 [Wadsworth. 



Above the timber line (near Willis's seat) he found twenty-five 

 Carabus Chamissonis in one day, by turning over several hundred 

 stones between 9 A.M. and sometime after 3 P.M. He found also a 

 number of Pterostichus punctatissimus in the subalpine region at the 

 place which is called the " silver forest," where the road turns at the 

 point of the Ledge. This region has been burnt over and its char- 

 acter has been changed thereby. The trees do not show an inclin- 

 ation to grow, where the spruces grew formerly, even birches have 

 hardly begun to start. 



General Meeting. October 3, 1877. 



The President, Mr. T. T. Bouve, in the chair. Twenty- 

 four persons present. 



The following papers were read : — 



On the so-called Tremolite of Newbury, Mass. 

 By M. Edward Wadsworth. 



The first notice of this mineral that I find is in Cleaveland's Min- 

 eralogy published in 1816, in which tremolite is said to occur 

 " in Newbury, not two miles from Newburyport, and near the turn- 

 pike, in fibrous radiated masses with granular limestone, serpentine, 

 asbestos, garnet, etc." Robinson, in his " Catalogue of American 

 Minerals" (1825), quotes from Cleaveland and makes the same state- 

 ment. Hitchcock, in his reports on the Geology of Massachusetts, 

 also speaks of the occurrence of tremolite at Newbury, and by the 

 associated minerals, he, as well as Cleaveland, shows that he refers 

 to the well known locality in Newbury called "Devil's Den." 



My attention was first called to this mineral by some specimens 

 presented to me by Mr. W. L. Titus, a student in Harvard College. 



From its general resemblance to specimens of Wollastonite in the 

 mineral cabinet of Harvard College, particularly those from Tausa, 

 Sweden, which were received from Professor Angelo Sismonda, I 

 was led to believe that it was that mineral and not tremolite . 



It agrees with Wollastonite in cleavage, quiet fusion, and gelatini- 

 zation with hydrochloric acid, and, moreover, chemical analysis 

 proves that it is a silicate of lime (Wollastonite) instead of a silicate 



