-346 ALEXANDER VOX HUMBOLDT. 



2. Nova genera et species plantarum sequinoctialium. 



3. Essai sur la Greographie des Plantes. 



4. Eelation abregee de 1'Expedition. 



5. Observations astronomiques et Mesures geodesiques. 



6. Observations magnetiques. 



7. Pasigrapliie geologique. 



8. Atlas geologique. 



9. Cartes fondees sur des Observations astronomiques. 



10. Voyage aux Tropiques. 



11. Statistique du Mexique. 



All these works were to be published under the joint names of 

 Humboldt and Bonpland ; but Nos. 1 and 2 were to appear as 

 * edited by Bonpland,' and Nos. 3 and 1 1 ' edited by Alexander 

 von Humboldt.' The letter then proceeds : 



6 I am anxious that the narrative of the expedition should 

 be written in a manner to interest people of taste. It will 

 naturally contain, besides statistical information, descriptions 

 of the physical aspect of the country and its antiquities, of the 

 manners and intellectual culture of the inhabitants, with data 

 upon commerce and finance, together with a narrative of the 

 personal adventures of the travellers. Considering the remark- 

 able energy of my disposition, I expect to see the whole out of 

 my hands in the course of a couple of years, or at most in two 

 years and a half, for I am now impatient to discharge my cargo, 

 that I may embark on something new. I hope while I am at 

 Eome to be able to draw out a general prospectus of these works, 

 which will be sold separately, though published in a uniform 

 edition ; I shall have the prospectus printed in French, German, 

 English, Dutch, Spanish, and Danish, for I am informed that 

 preparations are being made for publishing an edition of my 

 works in these six languages. 



6 But before this prospectus can appear, do you not think 

 that a bill of fare, like the enclosed, might serve to excite 

 an interest among English booksellers ? Though we might 

 engage that all the works should ultimately appear, we must 

 be careful to make a separate contract for each work, as Nos. 

 3, 4, 8, 10, and 11 ought to be sold at a higher price than 

 the others. I think that No. 3 will be a very important 

 volume, all the more from its being the first to appear. The 



