27 



from the daughters of the late Hon. T. H. Perkins, offer- 

 ing the Society his collection of shells and minerals, which 

 they had reason to believe he intended personally to present 

 to the Society. 



On motion of Dr. Keep, it was Voted, That the dona- 

 tion be gratefully accepted, and that the thanks of the 

 Society be transmitted to the daughters of the late Col. 

 Perkins. 



Dr. Cabot stated that he was requested to ask the Society 

 to appoint a Committee to take charge bf this collection, 

 and to offer for the acceptance of the Society the cases in 

 which they were now contained, if of any value to the 

 Society. 



Dr. A. A. Gould, Dr. John Bacon, and the Curators of 

 Conchology and Mineralogy, were appointed this Committee. 



The Treasurer gave notice that the sum of one thousand 

 dollars had been received from the estate of the late Hon. 

 T. H. Perkins, for the benefit of the Society, and offered the 

 following order, viz. : 



Ordered, That the sum of one thousand dollars received 

 from the estate of the late Hon. Thomas H. Perkins, on 

 account of a subscription for the purchase of the building 

 now occupied by the Society, be invested by the Treasurer 

 as a commencement of a fund, to be called the Building 

 Fund, and that the income be annually added to the said 

 fund. 



The order was unanimously adopted. 



The Secretary read a letter from Dr. James Lewis, com- 

 municating the following observations on a species of Lim- 

 nsea, (L. catascopium,) which presents different appear- 

 ances in different localities. The letter was accompanied 

 by specimens. 



At certain seasons of the year, Lymnsea catascopium may be 

 observed in considerable abundance, in the water of the Erie 



