Preparations and Equipment. 75 



we did not find any, this instrument unfortunately 

 did not come into use. For hydrographic observa- 

 tions we took a full equipment of water-samplers, deep 

 water thermometers, etc. To ascertain the saltness 

 of the water, we had, in addition to the ordinary are- 

 ometers, an electric apparatus specially constructed by 

 Mr. Thornoe. Altogether, our scientific equipment was 

 especially excellent, thanks in great measure to the 

 obliging assistance rendered me by many men of science. 

 I would take this opportunity of tendering my special 

 thanks to Professor Mohn, who, besides seeing to the 

 meteorological instruments, helped me in many other 

 ways with his valuable advice ; to Professor Geelmuyden, 

 who undertook the supervision of the astronomical 

 instruments ; to Dr. Neumeyer, of Hamburg, who took 

 charge of the magnetic equipment ; and to Professor 

 Otto Petterson, of Stockholm, and Mr. Thornoe, of 

 Christiania, both of whom superintended the hydro- 

 graphic department. Of no less importance were the 

 physiologico-medicinal preparations, to which Professor 

 Torup devoted particular care. 



As it might be of the utmost importance in several 

 contingencies to have good sledge-dogs, I applied to my 

 friend, Baron Edward von Toll, of St. Petersburg, and 

 asked him whether it was possible to procure serviceable 

 animals from Siberia.* With great courtesy Von Toll 



* I had thought of procuring dogs from the Eskimo of Greenland 



