PUBLICATION OF RESULTS OF EXPEDITION TO AMERICA. 13 



my return are already published, and are now complete. They 

 are as follows : 



'1. "La Geographic des Plantes." 



' 2. " Essai politique sur le Eoyaume de la Nouvelle- 

 Espagne." 



' 3. " Eecueil d'Observations astronomiques et Nivellement 

 des Cordilleres." 



' 4. " Observations de Zoologie et d'Anatomie comparee." 



' 5. " Plantes equinoxiales." 



' 6. " Monographie des Melastomes." 



' 7. " Monuments des Peuples indigenes de 1'Amerique." 



'These seven distinct works form, apart from the first 

 volume of the personal narrative, six quarto and five folio 

 volumes. It is of essential importance in the sale of the work 

 that the public should know which portions are complete. All 

 that remains now to be published are the three volumes of the 

 " Personal Narrative," the concluding part of the " Zoology," 

 and the " Melastomse." ' 



Though Bonpland continued after this to render some effec- 

 tive service in the prosecution of these undertakings, yet in 

 the publication of the chief botanical work 'Nova genera 

 et species plantarum, quas in peregrinatione ad plagam sequi- 

 noctialem orbis novi collegerunt, descripserunt, partim adum- 

 braverunt Am. Bonpland et Al. de Humboldt ' Hurnboldt 

 had no reason to regret the return of his former travelling- 

 companion to South America,, since he was enabled to secure 

 in his stead the assistance of the distinguished botanist, 

 Karl Sigismund Kunth. Humboldt's first effort towards ob- 

 taining extraneous assistance was in the invitation he ad- 

 dressed to Willdenow, who laboured for several months in 

 Paris upon the herbarium collected by the two travellers, 

 consisting of above 5,000 specimens of plants found in the 

 tropical regions of America. From the short period that 

 Willdenow was able to devote to these labours, owing to his 

 speedy return to Berlin, he could not have left any marked 

 impress upon the work, especially as the bias of his mind led 

 him to pay more attention to the accurate determination of 

 species than to the comprehensive idea of the universal rela- 

 tionships existing between various distinct genera. Kunth, 



