Agitation of LOCH 7 'AT. 201 



rufhed from the eaft and weft, in oppofite currents, towards a 

 line acrofs the bay, and about the edge of the deep, rofe in 

 the form of a great wave, to the height of five feet above the 

 ordinary level, leaving the bottom of the bay dry, to the diftance 

 of between 90 and i oo yards from its natural boundary. When 

 the oppofite currents met, they made a clafhing noife, and foam- 

 ed ; and the ftronger impulfe being from the eaft, the wave, 

 after rifing to its greateft height, rolled weftward, but {lowly, 

 diminilhing as it went, for the fpace of five minutes, when it 

 wholly difappeared. As the wave fubfided, the water flowed 

 back with fome force, and exceeded its original boundary four or 

 five yards ; then it ebbed again about ten yards, and again return- 

 ed, and continued to ebb and flow in this manner for the fpace 

 of two hours, the ebbings fucceeding each other at the diftance 

 of about feven minutes, and gradually lefTening till the water 

 fettled into its ordinary level. 



AT the fame, time that the undulation was obferved in the 

 bay on the fouth fide of the village, the river on the north was 

 feen to run back ; the weeds at its bottom, which before 

 pointed with the ftream, received a contrary direction ; and its 

 channel was left dry above twelve feet from either edge. Un- 

 der the bridge, (which is fixty or feverity yards from the lake), 

 the current failed, and the bed of the river appeared where 

 there had been eighteen inches of water. 



DURING the whole time that this phenomenon was obferved, 

 the weather was calm. It could barely be perceived, that the 

 direction of the clouds was from N. E. The barometer (as far 

 as I can recollect) flood the whole of that and the preceding 

 day about 29-3- inches. 



ON the next, and the four fucceeding days, an ebbing and 

 flowing was obferved nearly about the fame time, and for the 

 fame length of time, but not at all in the fame degree as on the 

 firft day. A fimilar agitation was remarked at intervals, fome 



C c days 



