266 M. Berzelius on Uranium. [April,' 



August. — Thunder and lightning on the day and evening of 

 the 2d, accompanied with much rain. 



September. — Many days of heavy rain. 



October. — Remarkably wet, having 22 days rain. The baro- 

 meter fell very low on Sunday the 10th and Monday the llth, 

 accompanied by a heavy gale of wind, with thunder and light- 

 ning. 



November. — A very wet and gloomy month. A violent hurri- 

 cane on the night of the 26th and morning of the 27th ; wind S 

 and SE. Rivers had overflowed their banks ; the tide rose to 

 an unprecedented height, and much damage was done along the 

 southern coast. 



December. — There were 24 wet days in this month, and the 

 lemaining seven were so damp and disagreeable as to amount 

 almost to such. There were but two decidedly dri/ days for the 

 month. On the 4th, there was a heavy thunder storm in the 

 evening. A fine meteor was observed on the night of the 29th, 

 about nine o'clock. 



Altogether the mean temperature of the year is much below 

 the usual standard. 



If there be added to the mean height of the barometer the 

 sum of 0'r21 in. for its elevation above the sea level, which is 

 very near the truth, it will give for the mean height 29*8736 + 

 0-121 = 29-9946. 



It appears remarkable that there was not a calm day observed 

 for the year ; a few hours only of calm occurred at a time. In 

 this observation, 1 consider it necessary that an extensive sheet 

 of water should not be rippled ; leaves of trees and long grass 

 should not be perceived to move, and the smoke ought to ascend 

 perpendicularly, to indicate a calm. This I believe to be a 

 very rare circumstance for many hours in succession. 



Article IV, 



Some Experiments with Oxide of Uranium and its Combinations. 



By Jac. Berzehus.* 



The Transactions of the Royal Academy of Sciences for 1822, 

 contain a copious memoir on uranium by M. Arfwedson, which 

 has extended and at the same time considerably altered our 

 former ideas respecting that metal.i' Among the experiments 

 which he made with a view to determine the composition of the 

 oxide, one gave 6-56 parts of oxygen to 100 parts of uranium, 

 and two others 6-24 and 6*37 : on the contrary he found, with- 

 out any variation in his results, that in the oxidule, 100 parts of 



;,■« Kong. Vet. Acad. Handl. 1823, St. 1. . ,,i 



f For a translation of M. Arfwedson's memoir, see Aimalt, vii. 253, New Seri«|,j -y 



