AbstractThe first observations on seiches in Scotland were made last summer by members of the Lake Survey, the differences in level having been measured by a foot-rule. A Sarasin limnograph was procured by the Survey and was set up at Fort Augustus on Loch Ness in June of this year, and has been recording since then, with only a few stoppages. The biggest seiche so far recorded had an amplitude of about 9 cm. The boat-house of St Benedict's Abbey, kindly put at Sir John Murray's disposal by the Lord Abbot, gave shelter to the instrument both from wind and waves.