Rec'dJune 28* 



Franklin County MO June 16, 1850 



My dear, honored Doctor: 



Mr. Egloststein forwarded duly yesterday afternoon your friendly letter of the 11 th . 



I have calculated for each day separately the differences in elevation between the 

 two Observation points in St. Louis and New Orleans. I send you an appendix along 

 with the papers you trusted me with to tabulate the data. These give an excellent 

 example ofthe differences in the conditions ofthe atmosphere that can take place at 

 the same point in time in places located far away from each other and differently 

 positioned. The arithmetic average ofall comes to531. 71 feet(Paris Standard); and 

 because your barometer is 105 feet above the Mississippi level and dr Wislizenus 

 Instrument is 22 feet above the sea level at the Mexican shore, thus the height of 

 the first above the second amounts to 448. 71 feet (Pahs).l am assuming that your 

 105 feet and Doctor Wislizenus 22 feet are in Paris units. Ifyou meant 

 English(London) units then the elevation difference in question amounts to 483. 7 

 English feet or 453. 83 Parisian feet If these results are markedly different from 

 earlier ones then the reason in my opinion stems from two circumstances: first that 

 the observations lasted over too Short a time or second, that they were made in a 

 season in which the atmosphere undergoes frequent, strong and quick changes. 



That our friend Wislizenus again has left St Louis was totally unknown to me. Now 

 he has probably reached Constanfmople. He is then almost as far from us as the 

 whole diameter of the Barth. I am glad that he is so successful in his wanderings but 

 I hope that he does not forget us but rather returns at the proper time. Should you 

 continue to write him, please give him my best regards. 



I thank you for your additional news and hope you will stay well and that we soon 

 see each other again. Kind regards to Mss. Pahn and Kimm. 



I remain respectfully your affectionate 

 David M. Göbel 



Transl. Eliasson 2/97 



Copyright reserved 



