84 THE FRESH- WATER LOCHS OF SCOTLAND 
others show that it is usually more marked when the limnogram is 
taken at the leeward end of the lake : it may be very marked there 
and almost or altogether absent at the windward end. It also depends 
on the amount of shelter at the point of observation. 
In most cases the occurrence of embroidery is accompanied by the 
3o\ '^■^ I ^.^jiMzM^^ia/n /3 oy 
Fia. 33. 
characteristic wind blurring on the microbarogram, or else by fluctua- 
tions of very short period and very small range. In some cases the 
fluctuations could be counted, and in one or two their period seemed 
to coincide with the period of the lake vibrations. The sensibility 
of the microbarographs used and the number of interpretable cases 
were not sufficient, however, to justify any general conclusion. 
Attempts were made to connect the periods of the lake vibrations 
