FROM REVOLUTION OF JULY TO DEATH OF THE KING. 225 



Quito,' l subsequently formed the opening treatise in the 

 'Miscellaneous Writings;' in the spring of 1838, he contri- 

 buted a paper ' Upon the Table-land of Bogota ' to the 

 ' Deutsche Vierteljahrsschrift ; ' and two months later he pre- 

 pared a treatise for the same periodical ' Upon the Fluctua- 

 tions in the Produce of Gold, as affecting the Problems of 

 Political Economy.' Papers of less importance, ' Upon the 

 Temperature of the Baltic,' and 'On some Electro-magnetic 

 Phenomena and the Atmospheric Pressure within the Tropics,' 

 appeared in Poggendorffs ' Annalen ' at an earlier date, between 

 the years 1834 and 1836. Some years previously in 1831 

 he had brought out in Paris his ' Tableau statistique de 1'Ile 

 de Cuba pour les annees 1825-9.' The enumeration of these, 

 the most important of his smaller works, will suffice to show 

 the extraordinary fertility of his genius at this period. Of his 

 remarkable industry in other matters, it need only be men- 

 tioned that he never failed to find opportunity of indirectly 

 furthering the interests of science by encouraging and assist- 

 ing the labours of others. His correspondence with Berghaus 

 is one instance among many of his zeal for the extension of 

 new investigations, and ready assistance in the solution of 

 scientific problems. In the meantime he never neglected, as 

 far as lay in his power, to secure to young labourers in the field 

 of science a substantial reward for their services ; he often 

 solicited for them pecuniary assistance, occasionally encouraging 

 them to make known their achievements to persons of in- 

 fluence, in some cases even to the king, especially when their 

 efforts were in any way connected with the interests of the 

 country, as for instance in the delineation of the relative 

 heights of the mountain ranges in Pomerania, and in giving 

 this counsel he did not forget to add the practical advice, ' to 

 mark the places of note with red ink or chalk, so that they 

 may at once catch the eye.' 2 



It is unnecessary to give any particulars of the thousand 

 requests for assistance that reached him from every quarter, for 

 the support of universities, public libraries, and other institu- 



1 First published in PoggendoriFs ' Annalen/ vol. xliv., enlarged in the 

 f Kleinere Schriften/ 



2 ' Briefwechsel mit Berghaus,' vol. ii. p. 186. 

 YOL. II. Q 



