OF BAEON HUMBOLDT. 143 



way of the isthmus which divides the two rivers 

 Don and Volga, in the vicinity of Tischinskaya ; 

 through the country of the Don Cossacks, 

 through Woronesh and Tula, and arrived again 

 at Petersburg November 13th. Here Humboldt 

 only remained as long as his obligations towards 

 the Court and Government required, and until 

 his collections had arrived. On December 

 28th, 1829, he reached the city of Berlin in 

 perfect health and safety. 



Baron Humboldt had been absent from Berlin 

 from April 12th, until December 28th; and 

 rarely has been, in so short a time, a more 

 extensive territory investigated ; for, in little 

 more than eight months, a journey of 2,500 

 miles had been accomplished ; considered in a 

 direct line, nearly one-half of the whole circum- 

 ference of the earth. 



The important results of this journey, already 

 noticed in the earlier part of this sketch, will 

 be found in the " Reise nach dem Ural, &c." 

 by Humboldt, Ehrenberg, and Rose.* 



* In retrospect of his first visit to Russia in the year 

 1840 eleven years after Baron Humboldt Sir Roderick 

 Murchison, the President of the Royal Geographical Society, 

 in his address at the Anniversary Meeting, May 22, 1865, 

 said : " When we look back to the condition of the 

 geography of Russia in the year 1840, when I first visited 



