t 



ADVERTISEMENT. 



In laying its Memoirs before the Public, this Socie- 

 ty does not hold itself as responsible for the facts or 

 opinions which may be advanced on the various topics 

 of Natural History that are discussed. These, accord- 

 ingly, must be distinctly understood, as resting entire- 

 ly on the individual authority of the respective Wri- 

 ters who have favoured the Society with Communica- 

 tions. 



