HEXRY CHARLES LEA. xli 



laying the foundation of our knowledge of freshwater bivalves, Lea's 

 aim and achievement were purely intellectual. Of him may be truth- 

 fully quoted those noble words of Tyndall : " The true son of science 

 will pursue his inquiries irrespective of practical considerations. He 

 will ever regard the acquisition and expansion of natural knowledge 

 — the unravelling of the complex web of nature by the disciplined 

 intellect of man, as his noblest end — and not as a means to any other 

 end." 

 The President: 



Dr. Dixon, Dr. ]\Iitchell, ]Mrs. Henry C. Lea. and other members 

 of Air. Lea's family, in the name and on behalf of the American 

 Philosophical Society, it gives me great pleasure to accept with 

 sincere thanks these gifts of affection and of a just civic and family 

 pride. They will find in the notable collection already in the ancient 

 hall of the American Philosophical Society the portraits of worthy 

 spirits and warm friends from those of Washington, Franklin, Jef- 

 ferson and Rittenhouse down to those of Cope, Leidy and New- 

 comb. There they will ever live, an inspiration to young men of 

 what may be achieved by a long life of faithful unremitting labor, 

 and a reminder to old men of what has been thus splendidly achieved 

 by their predecessors. 



