1886.] 341 [Meetings. 



been determined. The attitude of the fault-line with respect to the 

 trap ridges gives systematic explanation of the order of overlap of 

 successive ridges heretofore unexplained. Several other tests of 

 the hypothesis have come to mind but have not yet been applied 

 in the field. 



General Meeting, Jan. 5, 1887. 



Vice President, Mr. F. W. Putnam, in the chair. 



The following Associate Members were elected : Mrs. Ella F. 

 Boyd, Mrs. Emily A. Pigeon and Messrs. Chas. C. Doe, James 

 Means, George H. Parmelee, Loring Win. Puffer. 



Mr. Putnam gave a very interesting account of the explorations 

 made by.Dr. Chas. L. Metz and himself during the past summer 

 in the mounds and burial places of the Little Miami Valley, and 

 exhibited a series of photographs showing the successive stages of 

 excavation and the exact position of the skeletons and objects 

 found. 



General Meeting, Feb. 2, 1887. 



The President, Mr. S. H. Scudder, in the chair. 



Dr. J. S. Kingsley discussed the segmentation of the arthropod 

 egg, and the origin of the mesoderm. 



The President read a letter from Prof. R. H. Richards accom- 

 panying a curious fungoid growth from a zinc mine, called the Buck- 

 wheat mine, in New Jersey. 



General Meeting, Feb. 16, 1887. 



The President, Mr. S. H. Scudder, in the chair. 



Dr. Thomas Dwight read a paper on the range of variation in the 

 human shoulder blade. (See American Naturalist, 1887.) 



Prof. Wm. Trelease presented a monograph of the Geraniaceae 

 which will appear in the Memoirs, Vol. iv. 



