NOTICE TO SUBSCRIBERS AND AGENTS. 



The Editors will pay $1 00 in cash per No- for the following num- 

 bers of the American Journal of Science. Or if preferred, they will 

 credit them to the account of any subscriber at the rate at which re- 

 cent numbers are charged. Or they will exchange for them such 

 other numbers as may be desired of which they have a supply. The 

 Nos. wanted are shown below in a tabular form. If any No. is sent 

 by mail, the word returned must be put on the envelope. . 



Vol. 



Number 



V. XL XIII. 



2. 1. 



1,2. 



XIV. 

 1,9. 



XVI. 

 1,2. 



XVIL 



xxri. 



1,2. 



XXVII. 

 1,2 



Entire No. 12. 24. 27,23. 29,30. 33,34. 35,36- 45, 4G. 55,56. 



TO EDITOKS OF NEWSPAPERS. 



We 



exchanges that are frequently offered us ; but occasionally we are hap- 

 py to receive newspapers containing interesting notices/and we may 

 sometimes send a single No. of this Journal in acknowledgment, and 

 to be shown as a specimen of the work. — Eds. 



New Haven, Conn. Aug. 8, 1639. 



¥ 



