OF THE PARALLEL ROADS OF LOCHABER. 
697 
Table I. 
Angles, of inclination to horizon of slopes above and below parallel roads of Glen Roy. 
According to Macculloch, the “roads” vary from 50 to 70 feet in width; but Sir 
H. James gives them 40 to 50 feet. They are not flat, being, according to the former, 
only inclined at angles of from 12° to 20° and even 30° to the horizon. The following 
are some of his sections, with the addition of the estimated angles of the slopes. 
Fig. 9. 
Sections of the “ roads,” figs. 3, 2, 4, and 7 of Macculloch. 
Macculloch says of these that a occurs only near the rocky places at top ; b is a form 
which occurs in many places; c occurs at the entrance of Glen Gluoy and elsewhere; 
and d gives the exceptional case of an upper talus, met with in one place only. 
In Mr. Brown’s section the angle of the “road” is only 11°. The Survey measure¬ 
ments, for which I have also to thank Colonel Parsons, while they confirm Mac- 
CULLOCh’s observations, somewhat extend the range of variation, and they further give 
the spot where the observations were made, which Macculloch omits. 
4 u 2 
