Following on the current observations made during 1908 in Loch Ness by the author and Mr W. Watson, a few observations were made in Loch Garry (Ness basin) during August and September 1909. Mr Macdonald, Fort Augustus, again assisted in the work. The Loch Ness observations showed that the currents in the loch were very confused, but certain general conclusions were drawn; e.g. (1) that when a lake has become stratified and the temperature discontinuity has appeared, the return current is nearly always found above the discontinuity; (2) that towards the windward end of the loch the return current may take place close to the surface; (3) that slow-currents are to be found below the discontinuity, and with the same direction as the surface current. All these conclusions are borne out by the Loch Garry observations, and some additional information has been obtained.