Torlade d'Azambuja's essay on the monetary system of Portugal was presented to the American Philosophical Society in October 1833, and was read at the meeting of October 18. Written in Portuguese, the essay deals with one of the burning issues of the Jacksonian era, the money system, by examining the history of coinage and the money system in Portgual from the earliest times. Peter Stephen Du Ponceau translated the chapter titles as follows:

1. On money in general, p.1
2. On the value of the mark of gold and silver, at the different epochs of the Portuguese monarchy, p.6
3. On the Portguese monies the knowledge of which is most important to the subject of which we treat, p.25
4. Of copper coin, p.63
5. Solutions of problems which prove in part the utility of this memoir..., p.70
6. Of the value and coinage of money, considered in relation to national wealth, p.108
7. Of the increase of specie currency, considered in relation to national wealth, p.135
8. Conclusion -- On the general subject considered in this memoir, p.154

The letter of presentation (in French) from Azambuja to Du Ponceau, Oct. 15, 1833, is tipped into the front of the volume, along with a brief summary of the contents of the paper, in English, in Du Ponceau's hand.