242 



which a single specimen has lately been found in the Bay 

 of San Francisco. 



The Corresponding Secretary also referred to a paper, 

 read before the California Academy, by Dr. C. F. Winslow, 

 on Earthquakes, etc., wherein Dr. W. dissents from certain 

 views presented in a discussion upon this subject, at a 

 meeting of this Society, some months since. 



Dr. Charles T. Jackson presented to the Society a series 

 of specimens of Iron Ores from Nova Scotia, some of 

 which contain remains of Spiriferse, Tentaculites, and 

 Orthocera, and impressions of various other Silurian Mol- 

 lusca. Also recent Fresh Water Shells, from a lake drained 

 by railroad works, near St. John, on the Marsh road, and a 

 series of Marine Tertiary Shells, from a clay-marl, in the 

 same place. He also presented, in the name of Robert 

 Fowlis, Esq., of St. John, two very perfect Fossil Star 

 Fish, from the postpliocene marls, near the gas works in 

 St. John. The thanks of the Society were voted to Mr. 

 Fowlis for his donation. 



GEOLOGY OF PARTS OF NEW BRUNSWICK AND NOVA SCOTIA. 



Dr. Jackson gave a brief sketch of the Geology of New 

 Brunswick and Nova Scotia, and described the Silurian, Car- 

 boniferous, and Triassic rocks of those provinces ; as also the 

 metannorphic and trappean ranges of the Cobiquid and North 

 Mountains. In these his recent explorations, he was associated 

 with John L. Hayes, Esq., of Washington, D. C, and was em- 

 ployed by Charles D. Archibald, Esq., of London. In describing 

 the Geology of New Brunswick, he began at St. John, and traced 

 the rock formations from that place, following the line of travel 

 up the Kenebekasis River, to the Peticodiac. 



In tlie city of St. John, we find slates and metamorphic lime 

 stones, which, from the occurrence in them of a bed of hard 

 sandstone containing a fossil tree, are regarded as belonging to 



