PROSPECTUS. 



information and observations as any kind Corres- 

 pondents, who are also friends to Science, are willing 

 to afford us ; we shall feel ourselves obhged by such, 

 and shall consider it our duty to acknowledge them 

 with becoming gratitude, whenever we make use of 

 them. 



Feeling that the completion and consequent final 

 success of our Work depends, in a great measure, 

 upon the encouragement it receives at its commence- 

 ment, we beg leave to assure those who become pur- 

 chasers, that it shall be continued, and with the utmost 

 regularity, until it is complete, whether it answer our 

 expectations or not, provided only that the actual 

 expenccs we may incur be paid by it without giving 

 us any profit. 



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