262 DR. GUSTAV RADDE ON THE VERTICAL RANGE 
The height of Salawat, above Nucha in the main chain, 11,932 
ft., by triangulation, north-westerly. 
—, do., south-westerly, below Nucha, 11,932 ft., by triangu- 
lation. 
Salawat Pass, on the north-west, 10,207 ft. 
Tufan-dagh, peak, 13,764 ft., by triangulation. 
Pass to the Dolama and Kurwa plateau, 10,640 ft. 
Kurwa Pass, summit, 11,247 ft. 
Pirli-dagh, camp, 9951 ft. 
Schah-dagh, western peak, 13,511 ft., by triangulation. 
———, eastern peak, 13,951 ft., by triangulation. 
———, do., excursion to, 11,604 ft. last noticed plants; last 
measurement, 12,136 ft. 
Basar-dusy, peak, 14,722 ft., by triangulation. 
Schalbus-dagh, peak, 13,679 ft., by triangulation. 
, camp, by the seree on the south side, 10,755 ft. 
, highest camp, 11,280 ft. 
Zabachan Pass, 9134 ft. 
Iohe Pass near Dulty-dagh, 10,646 ft. 
Nussa Pass, 12,185 ft. 
Dulty-dagh, northern foot, 9767 ft. 
Ketz Pass, watershed between Kara-Koissu and the Awarisch 
Koissu, 11,503 ft. 
Chalata-Kale Pass, towards Kachelien, 9852 ft. 
Before passing on, I have the following remarks to make :— 
With the exception of the Thalamiflore, which are enumerated 
by Ruprecht, the references to altitude in literature are very 
scanty, so that for the most part I am able only to show the heights 
which I have myself discovered. The sadly premature death of 
that celebrated botanist prevented the completion of his classical 
work. His frequent citations of altitude offer an excellent check 
for my results, so far as they relate to Daghestan; but it 
will be seen that in many cases Ruprecht gives a greater 
maximum altitude for the species concerned than I was able to 
find, and, on the other hand, I found some at greater heights. 
Notwithstanding, the difference of heights vary usually only by 
200-300 ft. Such differences are easily explained when regard 
is paid to the position of the place of collection and its exposure, 
for the species in question. 
The general current rule for our region, according to which 
the snow-line gradually rises in a direction from north-west to 
