ADVERTISEMENr. 



THE frejent volume has been detained an unujual 

 time in the prejsy partly by the engagements of fome of 

 the authors y who have revifed their papers for publica- 

 tion; and partly by delays attending the execution of the 

 engravings. "The number of materials has likewife 

 rendered this volume larger than either of the former ^ 

 and conjequently lengthened the time of imprejjion. 



From the injlitution of the new clafs of correspond- 

 ing Members, the Society may expe^ an extenfion of 

 communications ; while the method of printing to be 

 purjued in future* by furnifhing an early circulation 

 of every effay, among literary men, may induce the 

 Honorary Members, at large, to impart their objer- 

 vations or difcoveries Jlill more frequently. 



'The Society mufl repeat the declaration, prefixed to 

 their firji volume, that refponfibility for the truth of 

 fa5is, orjujlnejs of opinions, to be found in this volume j 

 refis with theix refpe5live authors. To encourage 

 Jcientific exertions is the grand obje£i of the injlitution j 

 and the Society gladly acknowledges that the public 

 has treated its endeavours with equal indulgence and 

 favour. 



♦ See the Laws annexed. 



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