187 



had been received, requesting that deficient numbers may be 

 supplied, and promising to send in exchange the Bulletin of that 

 Society, then in course of publication ; — from the Academia 

 delle Scienze dell' Institute di Bologna, May 20, 1854, returning 

 thanks for the Journal, Vols. 1 to 4, and for the Proceedings, 

 1846 to 1853. 



The letters of the Geographical Society, and of the 

 Society of the Department of the Moselle, were referred 

 to the Publishing Committee. 



April 18, 1855. 

 The President in the Chair. 



The President reminded the Society that the next meet- 

 ing would be the Regular Annual Meeting of the Society, 

 and that in accordance with custom, a Committee should 

 be appointed to nominate officers for the ensuing year. 

 Accordingly, Drs. Durkee, ShurtlefF, and Abbot were ap- 

 pointed a Committee for this purpose. 



The President stated that he had received from Mr. Field a 

 beautiful and peculiar specimen of Fossil Rain-drops, which he 

 would now exhibit. As this subject had been discussed at the 

 previous meeting, it would not be amiss to point out some of the 

 specimens, which presented the different forms of the rain-drop 

 impressions. He would be able to exhibit four or five different 

 impressions. The first would show the most common form, 

 caused by the rain falling perpendicularly. This was a section 

 of a sphere of various sizes, all regular. 



A second form was produced when the rain fell obliquely, in 

 consequence of which one edge of the impression was more 

 elevated than the other, and might have an oval shape. 



