72 Robert Chambers, Esq., on Changes of the 
Dombaas, of which the height is given by Prof. Naumann 
as 2162 (English) feet. In its relation to the lakes in 
the summit between the two valleys, it precisely resembles 
the lowest of the Inverness-shire parallel roads, as exem- 
plified in Glen Spean, where advancing to the basin of 
Loch Laggan, between the Spean and Spey valleys. The 
terrace in every other respect bears a strong resemblance 
to the Inverness-shire roads; while in some important re- 
spects, as already noted, it differs from other terraces. I 
should much desire to see it obtain the attention of local 
observers, by whom its internal constitution and other fea- 
tures could be more particularly ascertained. Meanwhile, 
it is not unworthy of remark, that on a neighbouring portion 
of the plateau of the Dovre field, between two and three 
thousand feet above the sea, there are peat mosses contain- 
ing remains of much larger trees than now grow in the dis- 
trict, the vegetation of which does not ascend above a dwarf 
birch. If the terrace were at one time upon the level of the 
sea, this plateau would of course enjoy a climate equal to 
that of districts of a few hundred feet of elevation, and it 
might then be well able to raise such pieces of timber as 
now lie ruined in the mosses. 
The city of Trondhiem lies at the opening of the valley of 
the Nid, with high grounds on the east side, and a bold 
cliffy hill overlooking the sea on the west. Close to the 
town, and along the valley for several miles, there are ter- 
races of clayey material, none of which persevere for a great 
way. From indeterminateness of form, and partly of level 
also, it is impossible to state their elevations with great dis- 
tinctness ; but I may mention, for the sake of general de- 
scription, that, on sighting them with the telescope-level 
across the country, they exhibited lines, more or less definite, 
at about 60, 111, 145, 253, and 435 feet. The most interest- 
ing object of the kind is a terrace of erosion, on the face of 
the cliffy hill to the west of the city. This is an extraordi- 
nary and most impressive example. It extends for miles 
along the face of the hill, at one uniform elevation, which I 
ascertained with the level and staff to be 522 feet above the 
