268 





EARTHQUAKES. 





The barometer was rising . , 



in 169 cases 



»> >» 



falling 



. in 154 „ 



»» »» 



steady 



in 73 „ 



»f it 



below the monthly mean 



in 189 „ 



»» »» 



above „ 



in 192 „ 



From this it would appear that in Japan at least the 

 movements of the barometer do not show any marked 

 connection with the occmrence of earthquakes. 



When considering this question we must remember 

 the marked effects which a lowering of the barometer 

 produces upon certain volcanoes and solfataras. The 

 volumes of steam emitted from Stromboli and from some 

 of the solfataras in Tuscany hold a marked connection 

 with atmospheric pressure as the quantity of fire damp 

 given off from coal seams — these being greatest when the 

 barometer is low. At certain changes of the weather it is 

 said that the volcano of Vulture, near Melfi, emits noises. 

 These phenomena at once place volcanic phenomena and 

 barometrical pressure in direct relationship. 



Changes in temperature. — If, with an earthquake, it 

 should happen that there is a change in the height of 

 the barometer, we should naturally expect that this might 

 be accompanied with the changes in the temperature, 

 in the wind, and in other atmospheric phenomena which 

 are more or less connected with the height of the 

 barometer. 



Many times it has been observed that after an earth- 

 quake there has been a sudden fall in the temperature. 

 Such was the case with the Yokohama earthquakes of 

 1880. 



Cotte endeavours to show that the earthquakes of 

 Lisbon produced a change upon the temperature of all 

 Europe. In the year which followed this earthquake 

 storms were more common than usual. 



Kluge has collected together a large number of 



