Royal Society of Gott'ingen, &c. ^6j 



zard. — Mct'ccfTological Abftraft for the Years I7$7, ^798, 

 and 1799; by Mr Playfair. — A new and univerial Solution 

 of Kepler's Problem ; by James Ivory, Efq. — Defcription of 

 fome Improvements in the Arms and Accoutrements of Light 

 Cavalry, Sec; by the Earl of Ancrum.— A new Method o£ 

 exprefling the Co-efficients of the Development of the Alge- 

 braic Formula (a^ + b^ — lah cof, p"), by means of the Pe- 

 rimeters of two Ellipfes, when n denotes the half of any odd 

 Number; with an Appendix, containing the Inveftigation of 

 a Formula for the Reftification of any Arch of anEUipfe : by 

 Mr. William Wallace. — Chemical Analyfisof an uncommon 

 Species of Zeolite ; by Dr. Robert Kennedy. 



ROYAL SOCIETY OF GOTTINGEN. 



The following prize queflion has been propofed for the 

 year 1 804 : 



As many obfervations and theories refpefting the nature, 

 principles, and laws of atmofpheric phjenomena, which if 

 fubje6ied to proof and more accurately known might be of 

 great importance and utility in improving the prefent fyliem 

 of meteorology, are contained in the works of the old and 

 modern naturalifts of the i6th century, the Society requires 

 a hi (lory of meteorology from the time of the Greeks 

 and Romans to the prefent period, drawn from authentic 

 fources, and materials fele6led with critical attention to the 

 objc6l in view. The prize will be 50 ducats, and the papers 

 muft be tranfmitted to the fociety before the month of Sep- 

 tember of the above vear. 



LXIV. Intelligence and Mifcellaneous Articles, 



FROM PROFESSOR PICTET. 



PPari'!, [anuary r, iJ^o^. 

 ROFESSOR PICTET prefents his mod fincere refpeds 

 lo Mr. Tilloch, and embraces the opportunity of a friend to 

 fend him one or two communications, which may prove in- 

 tereftino;. 



In the fitting of the National Inftilutc of December 29, a 

 letter was read from M. Mollct, profclfur of natural pliilo- 

 fophy at Lyons, in which he announced two flu'-ts which 

 appear to be new. The firft is the appearance of a (mall 

 liglit in the air which (urrounds the oriiicc oi an air-<run 



when 



