THROUGH FINLAND. 
385 
gt Ration, the elevation or depreflion of the other Rgnals in rela- 
“ tion to their horizon. I meafured all thofe angles, and what 
“ furprifed me a good deal was, that I found them always a little 
larger than they have been determined in the figure of the earth. 
The inRrument I employed in my operation was a whole circle 
“ of fourteen inches and two-thirds diameter, graduated at each 
et minute : neverthelefs, I believe, that by the help of an eRimate, 
“ one may aRure himfelf that he is not deceived by more than 
“ ten, or at moR fifteen feconds. A complete defcription of this 
“ inRrument may be feen in the memoirs of the academy of 
“ fciences, at Stockholm, for the year 1/50, 20th and following 
“ pages. The RrR fufpicion that Rruck my mind, upon obferv- 
“ ing this difference, was, that it might arife from the point zero 
“ in that circle. This I examined on the fpot, and found it w T rong 
“ T 3o". I continued the fame examination for feveral fucceflive 
“ days after I got to Tornea; and taking the mean of my obfer- 
<£ vations on terreRrial objedls, as well as meridian heights of the 
“ fun, I obferved that ]' 24" ought to be deduced from all the 
obfervations of heights, a circumRance which at the fame time 
“ proves that the inRrument had fuffered no injury in travelling. 
“ Individuals will make what remarks they pleafe on my obfer- 
£C vations ; I here fubjoin them exa&ly as they were made. 
3 D 
VOL. I. 
Place 
