46 



great lakes, within a comparatively recent period. Yet we may hope, 

 and fairly expect, that by carefully tracing the lake ridges, measur- 

 ing their elevation above the present water-level at various points, 

 examining minutely the present and former outlets through which 

 the surplus water of the lakes escapes or has escaped, that much 

 more than we now know will be learned of this interesting subject. 

 To stimulate inquiry in this direction, is the main purpose for which 

 these brief notes are now written. 



Mr. Scuclder announced the donation of fifteen copies of 

 the illustrated edition of Harris's "Insects injurious to Vege- 

 tation " from the State of Massachusetts. The thanks of 

 the Society were voted for the same. 



It was voted unanimously that article 3d of the constitu- 

 be so altered that the last sentence shall read, " Any person 

 who shall contribute at one time to the funds of the Society 

 a sum not less than one hundred dollars shall be a Patron. 



Messrs. A. C. Baldwin, James Freeman Allen, Jonathan 

 Preston, William J. Preston, Lyman Nichols and Barthold 

 Schlessins:er were elected Resident Members. 



March bth. 

 The President in the chair. 



The President read a letter from Dr. Kneeland, the Re- 

 cording Secretary, stating that he had been called again to 

 enter the medical service of the army. 



Dr. J. C. White was chosen Secretary pro tempore. 



Dr. White read a communication presented by Dr. Knee- 

 land "On some Anatomical, Physiological and Zoological 

 Points suggested by J. Emerson Tennant's ISTatural History 

 of Ceylon." 



The Corresponding Secretary presented by title a paper 

 containing "Observations on the summit structure of Pentre- 

 mites, the structure and arrangement of certain parts of 

 Crinoids, and descriptions of new species from the carbon- 

 iferous rocks at Burlington, Iowa, by Charles A. White." 

 Referred to the Publishiner Committee. 



