220 THE LOCH LOMOND AND OTHER VALLEYS. 



towards N. 20 W. into Loch Gilp, and N. 15 E. to the 

 Otters Spit Narrows, the 90-fathom hole being at the 

 junction of these two lines. Immediately north of 

 the Otters Spit Narrows the line of deeps is shifted 

 considerably from the west towards the east ; while 

 north of this line the deeps bear N. 20 E. till they 

 meet the break (N. 20 W.) coming down Gair Loch, 

 at the junction with which there is a deep hole, over 

 30 fathoms deep, the surrounding bottom being less 

 in depth. Also starting from this point is another 

 line of deeps which bears N. 40 E., and extends to 

 the Minard Narrows. At the Minard Narrows there 

 is a complication, there being various small islands, 

 and only one narrow channel, which reaches 20 

 fathoms in depth. North of these islands the line 

 of deeps is slightly shifted towards the west, and 

 it bears about N. 30 E. as far north-east as 

 Furnace, when its bearing changes to N. 70 E. ; 

 but in a short time, when Strachur Bay is nearly 

 reached, it changes to N. 25 E., and this line of 

 deeps extends past Inverary into Loch Shira. From 

 a little east of Furnace to Inverary the fiord is very 

 deep, most of it being over 50 fathoms, while there 

 are long holes in it over 70 fathoms deep. From 

 Inverary toward the N. 60 E. the deeps extend for 

 some miles, while the channel of the fiord at the 

 north-east extremity bears nearly due N.E. 



From the summary just given it is evident that 



