On the new Tlanet Patlasi 49 



tesolvcd to determine the fact by actual and careful expcij- 

 mehts, the results of which were so different from what 

 have been received, that 1 think myself called upon to stale 

 them. 



In order to obtain the more certainty, I made on purpose 

 three accurate thermometers, on which I could perfectly 

 rely ; and from their agreements I can with confidence say 

 that mercury boils at G56^ lead fixes at 019", and tin at 

 442°; — their specific gravities being respectively thus : mer- 

 cury 13,568, lead 11,346, tin 7,278j taken in distilied 

 water at 62^. The gravities attributed to them by authors 

 are nearly the same ; which is so far satisfying. 



When the experiments were made the barometer stood at 

 2y3, 2-1 feet above the sea. 



James Ckichtox. 



MIL On Ihe netr Planet Pallas. By Baron Yo^ Zach. 



JL HE proofs on which the improvement of our astronomy^ 

 both theoretical and practical, is at present ibunded, can- 

 not be more conclusive ; and the triumph which this sci- 

 ence has obtained, even in the eyes of the public in gene- 

 ral, cannot be greater than it is at present by the re-appear-' 

 ance of I'allas. 



This small planet, after its discovery last year by Dr. 

 Olbers, was scarcely observed four months when it ap- 

 proached so near the solar rays as to become lost in them ; 

 and having now emerged frcyii them, after being invisible 

 for six months, it has oeen again found, like a small point, 

 hardly perceptible, among myriads of worlds, and exactly 

 in the spot where its place was announced by theory. To 

 this new discovery of the re-appearance of Pallas, the great- 

 est possible physical and intellectual powers of man have 

 C(jntributcd. 



On tl>e ISth of Februaiy, about 14'' 50', Harding, that 

 expert observer of Lilicnthal, was so fortunate as to find 

 again Pallas, exactly in the place where it ought to be ac- 

 cording to the calculations of Dr. Gauss, inserted in the 

 Monatlkhe Corrcspondcnz for December ieO'2. The tol- 

 louing night he had the pleasure to ascertain its exist- 

 ence in the most satisfactory manneri On the 15th ot 

 Februaiy, about 15'', he found it nearly over No. :iG oi 

 Poniatousky's liull, as a small star of the 12th or I3tl) 

 magnitude, and knew it to be the planet, as he had observed 



Vol. XVT. No. Gl. D vny 



