288 On the Seiches of the Lake of Geneva. 



The thermometer and hygrometer were also examined, and their 

 indications marked. 



In the memoir, we are presented with the details of ten ob- 

 servations made by Mr Vaucher in the manner he has described 

 above. The first, which was made only at one station, viz. at 

 Eaiuv-ViveSn on the left bank of the lake, quite close to the town, 

 went to establish the almost unceasing continuity of the oscilla- 

 tory movement of the waters of the lake, which never ceased 

 either to ascend or descend. In the second observation, Mr 

 Vaucher established a second station at Paquis, upon the right 

 bank of the lake, opposite to the former. We shall copy the 

 details of this second observation, that we may exhibit, by a 

 striking example, the progress of the phenomenon. 



It was made SOth of December, commencing at 1 hour 10 

 minutes. 



Barometer was 26.10.8. Thermometer -f 3. Hygrometer 82. 



It- is to be observed that the two watches employed were in 

 exact correspondence ; also, that in the following table the letter 

 r. stands for rose ; the letter f. stands iovfill, and s. stands for 

 stationary. 



The correspondence (Mr Vaucher remarks) betwixt the ob- 

 servations made in the two experiments struck me as remark- 

 able ; for, except in a single instance, that, namely, of the 49th 

 minute, in which the water fell in the one place, whilst it rose 



