/2. 



NOTICE. 



The series to which this volume belongs, is presented by 

 the Smithsonian Institution with the understanding, and 

 on the condition, that it is to be carefully preserved for the 

 use of students and others, and is to be returned to the In- 

 stitution in case the establishment to which it is presented 

 at any time ceases to exist. 



JOSEPH HENRY, 



Secretary S. I. 



