114 ALEXANDER VON HUMBOLDT. 



or my dignity. To blow one's own trumpet is part of an au- 

 thor's trade, therefore I hold reviews to be of some importance. 

 Brodhagen might avail himself of the opportunity afforded by 

 the new impulse lately given to the journal by the advent of 

 Herr Hoffmann, who since January has joined Herr Kohler in 

 the management of the magazine. 



' I have been living lately very much among the printers. 

 Only think of the following articles being all either actually 

 printed or else going to press : 



4 For the " Annalen der Botanik" 



6 1. On the Motion of the Filaments of the ParnassiaPalustris. 

 c 2. On the Double Prolification of the Cardamine Pratensis. 

 6 3. Diss. de plantis subterraneis Fribergensibus. 



6 For Grerts " Journal der Physilc" 



4 Experiments upon the Green Colour of Subterraneous Vege- 

 tation. 



6 For CreWs "Annalen." 



6 Table of the Conducting Powers of Heat in various Bodies, 

 calculated according to Maier's Formulae. 



' Do not in any case omit to read my essays on the " Theory 

 of Evaporation," and on some " Experiments on the Decom- 

 position of Common Salt." Both are new. 



' So much discovered and observed ! Nos poma natamus ! 



6 HUMBOLDT.' 



Among Humboldt's fellow-students may be mentioned Leo- 

 pold von Buch, who subsequently attained so high a position in 

 science; Esmark, a Dane, who died in 1840 as Professor of 

 Mineralogy in Christiania ; Andrada, a Portuguese ; and Del 

 Eio, a Spaniard, whom he afterwards met twelve years later 

 in Mexico as a teacher in the Colegio de Mineria. 



Humboldt's departure from the School of Mines was signal- 

 ised by a formal celebration given him by his friends on 

 February 26, on which occasion he was addressed in two 

 poetical effusions, one in the German and the other in the 

 Latin tongue. 



