68 “ Prize Queflions by the 
RE LENG. eee 
LEARNED SOCIETIES. ee mn 
GERMANY. 
Ox the oth of Auguft aft the Academy of Sciences at 
Berlin held a public fitting in honour of his Majefty’s birth- 
day, on which occafion the following prize. eer ae 
announced: Sa tol? 
MATHEMATIGS. 
The mathematical clafs had propofed for the year 1798 
the following prize-queftion : | 
«° As the dchauis of the ableft aftronomets have left fever al 
points reipecting the variation in the obliquity of the ecliptic 
to. be explained, the Academy invites the Learned to turn 
their attention to this fubjeét once. more, and will adjudge 
the prize to that paper which fhall contain the moft inte- 
re{ting refearches on it. / 
‘* One paper only on this queftion has been tranfmitted to 
the academy, with the motto Tamen u/que recurret 3 the 
author of which feems well acquainted with the fubjeét, and 
fully capable to examine it thoroughly. In many places he 
has followed the calculations of M. Schubert, publifhed in 
the tenth volume of the New Tranfaétions of the Imperial 
Academy of Peterfburgh; and has brought together, in a 
fmall compafs, a great many eae refults. As the 
fhortnefs of the time, however, did not permit him to give 
his own obfervations at fafficient leng oth, and as the objet 
of the academy was to fee removed, as far as poffible, the 
difficulties with which the fubject is _ftill attended, it ‘has 
refolved to propofe the queflion agam for the year 1802, with 
a double prize; and, to place its meaning in a see 
point of view, requefis, the learned, and the author of the 
above-mentioned paper in particular, to attend to the follow- 
“ing 
