32 On preventing the injurious Effects resiiltingfrom the 



At Augsburg, Professor Stark observed that the duration of 

 tlie annukis was 5' 47",5 ; but neither the beginning nor end of 

 the eclipse could be observed on account of the unfavourable 

 state of the atmosphere : Reaumur's thermometer fell 3i de- 

 grees (equal to 8 ' of Falirenheit). 



At Spire, Professor Schwerd made the following observa- 

 tions: 



Beginning of the annulus Q,^ 37' 55'\5 ~\ 



End of do. '^ 42 4-3 ,5 > Apparent time. 



End of the eclipse ... 4 57,1 J 

 About six seconds before the formation of the annulus, a bright 

 spot v.as seen on the point of one of the horns, which shortly 

 after appeared to flow into it. About half a second before the 

 complete junction of the two horns, there appeared a row of 

 briwht points. A similar appearance was observed at the dis- 

 solution of the annulus. The barometer stood at 28,1 inches : 

 and the thermometer (reduced to Fahrenheit's scale) fell from 

 69^ to 64. A burning-glass, six inches diameter, which im- 

 mediately set wood in a flame, did not ignite tinder during the 

 time of the middle of the eclipse; nor would it turn paper, in 

 tlie least, brown. 



At Munich (in the middle of the city) the formation of tlie 

 annulus was observed at 2^ 53' 23" mean time. The barome- 

 ter stood at 26,78 inches. And the thermometer (reduced to 

 Fahrenheit's scale) fell about three degrees. 



From the island of Zante I have received communications 

 fi-om two observers ; differing in some trifling points fi'om each 

 other. But as the results are stated to the nearest viinute only 

 (omitting the seconds), I do not think it necessary to quote them 

 in this place. It appears however that the atmosphere was not 

 perceptibly darkened, till nearly the time of the formation of 

 the annulus, which lasted about five minutes : and that the ther- 

 mometer fell only 2\ degrees during the whole time of the 

 eclipse ; viz. from 88^ to 86. 



V. Accoutit of a successful Experiment to prevent the injurious 

 Effects resulting from the Diffusion of arsenical Vapours from 

 Coppei'-smcltitig Furnaces*. 



J. HE injurious effects of the escape of arsenical and other dele- 

 terious vapours from the copper-smelting furnaces in the neigh- 

 bourhood of Swansea have been long known. These con- 

 densing and falling on the surrounding country, have not only 

 greatly uijured, but ahnost totally destroyed, vegetable and 



* Monthly Magazine for May 1822. 



animal 



