OF ARTS AND SCIENCES. 167 



TWO Ivx\RGE BOWIvDERS NEAR MANCHESTER. 



There are two bowlders near Manchester that are of a size 

 worthy of being recorded, although they are by no means the 

 largest in the State. In the southern part of Dunbarton, not 

 far from the Goffstown line, is one composed of porphyritic 

 gneiss that is thirty-five feet long, thirty-one feet wide, and fif- 

 teen feet high above the surface of the ground. How far it ex- 

 tends below the surface is not known. It is located in a 

 swamp, and doubtless rests upon the gravelly bottom of the val- 

 ley. 



The other bowlder is a little larger, being thirty-eight feet 

 long, thirt3^-five feet wide, and nineteen feet high above the lev- 

 el of the ground. This is situated on the line between Man- 

 chester and Londonderry, about forty rods west of the Derry 

 road on the west bank of Manter Brook. It was known to the 

 early settlers as the " Great Rock," and everj^ deed of land in 

 the immediate vicinity named at least one bound as being such 

 a distance in such a direction from the "Great Rock." It is 

 composed of the gneiss that is common in Manchester and other 

 parts of the State. A bank of fine sand, beginning at the bowl- 

 der and spreading out like a fan as it extends towards the south 

 shows how the rock divided the current of the post-glacial stream 

 that flowed through the valley. 



Wednesday evening, December 11. The President in the 

 chair. 



This being the annual meeting, the following officers were el- 

 ected : 



President, Susy C. Fogg, 

 Vice President, Walter S. Abbott, 

 Secretary, Martha J. Kennedy, 

 Treasurer, Sara Hunt, 



Exectitive Committee, W. H. Huse, Flora M. Walker, Mrs. 

 Fred E. Allen. 



The subject for the evening was "Organic Agencies." Mr. 

 Huse made the following statements about 



