Xll PREFACE. 



In conclusion, the compiler has much pleasure in ac- 

 knowledging the great obligations under which he lies to 

 George Ord, Esquire, one of the Vice Presidents of the 

 Academy of Natural Sciences, and one of the Secretaries 

 of the American Philosophical Society, for his assistance 

 in the preparation of this work. Mr, Ord's perusal of the 

 greater part of the manuscript previous to its being put to 

 press, has preserved it from many inaccuracies which it 

 Avould otherwise have contained. 



W. H. K. 



