INTRODUCTION 
II 
sounding-machine that could be used in small rowing-boats. The 
only instrument of this kind available in 1895 was one constructed by 
Dr Ule, and exhibited at the Sixth International Geographical 
Congress in London (1895). This apparatus was purchased by Mr 
Fred. P. Pullar, and with it numerous soundings were taken in Loch 
Morar, Lochs Frisa, Ba, and Uisg in Mull, and also in Lochs Katrine^ 
Fig. 4, — F, P. Pullar Sounding-Machine. 
Lubnaig, Voil, and Doine. It proved most unsatisfactory, for after 
a few months' use the registration of the depths was found to be 
quite untrustworthy, and it was consequently discarded. Subsequently 
Mr F. P. Pullar designed the sounding-machine represented in fig. 4, 
and now known as the F. P. Pullar sounding-machine.^ This in the 
1 The sounding-machine (see fig. 4) is constructed of steel cycle-tubes, which are 
lield in position by means of gun-metal brackets, and is divided into two sections 
in order to pack into as little sjoace as possible for transport. The first section 
consists of a bracket, carrying two upright tubes, with an adjustable clamp (K),, 
