From inquiries made of the inhabitants of the shores of Lake Tahoe, I was not able to discover that any rhythmical oscillations of the level of its waters have ever been noticed.

Some residents declared that they had observed sudden fluctuations of level, which, from their suddenness, they were disposed to ascribe to disturbances of the bottom of the Lake due to volcanic agencies, although they were unable to coordinate such oscillations with any earthquake manifestations on the adjacent shores.
It is evident, however, that until arrangements are consummated for recording systematic observations on the variations of the level of this Lake, we cannot expect that its _Seiches_ will be detected.

Of course, self-registering gauges would give the most satisfactory results; but any graduated gauge, systematically observed, would soon furnish evidence of the phenomenon.

For the longitudinal _Seiches_, "Hot Springs," at the northern extremity of the Lake, or "Lake House," at the southern end, would be eligible stations for gauges; and for the transverse _Seiches_, Glenbrook, on the eastern shore, or Capt.
McKinney's on the western margin, would afford good stations.
As far as I am aware, true _Seiches_ have never been observed in any of the American lakes.

This fact is the more remarkable from the circumstance that long-continued and careful observations have been made on the fluctuations of level of several of the large Canadian lakes, with the view of testing the possible existence of lunar tides.