felt. The walls of buildings could be seen to move, and strong frame 

 buildings creaked as when every joint is strained by a heavy wind. At 

 Ironton the shock was also so severe as to alarm some who lived in brick 

 houses. Along the Missouri, from Glasgow to Lexington, the shock was 

 also severe, awakening many families, who thought a heavy wind-storm 

 was in progress. 



It appears that the shock was first felt at Glasgow iih. 23m. p.m. (St. 

 Louis time). The shock travelled rapidly down the axis of the ellipsis, 

 reaching Cairo at iih. 48m., and Memphis at iih. 50m. The velocity of 

 transmission is a matter yet under consideration, and will receive atten- 

 tion in a future bulletin. 



At Little Rock, Ark., the shock was also distinctly felt, although not 

 observed at Clarksville, 35 miles farther up the river. 



Earthquakes are to be expected over this region, and it is hoped that 

 all interested in scientific work will hold themselves ready to make accu- 

 rate observations on them. 



Dr. G. Hambach exhibited specimens of shaly limerock, con- 

 taining well-preserved remains of different species of insects, of 

 which he had over 400 specimens, obtained from the pliocene or 

 upper tertiary of the Rocky Mountains. The specimens were 

 found some 40 miles from Colorado Springs. 



Mr. Alexander Leonhardt was elected to associate membership. 



February 17, 1879. 



A. Todd, Vice President, in the chair. Thirteen members 

 present. 



Mr. Holmes called attention to a memoir, by Oswald Heer, 

 upon the fossil botany of northeastern Asia. The evidence ad- 

 duced tended to prove the existence of a land connection across 

 Behring's Straits as late as the Pliocene period. 



Mr. Alexander Leonhardt read a paper on the microscopic 

 examination of rocks. Many interesting rock-sections were sub- 

 mitted for examination. 



Dr. Charles Ludwig was elected to associate membership. 



March 3, 1879. 



A. Todd, Vice President, in the chair. Ten members present. 

 Mr. Nipher made some experiments on vibrating plates. 

 Edward Walsh, Jr., was elected to associate membership. 



