The Academy desires it to be -understood that they are not 

 ansicerabie for any opinion, rejn-esentation of facts, or train of 

 reasoning that may appear in any of the followiiig Papers. The 

 AtUhors of the several Essays are alone responsible for their 

 contents. 



Dvulik : Pmixtkii at t«« Uwitxhmtt Pkrub bt I'ojiiiosbt ajip Oihi*. 



