PROFESSOR JOHN HUTTON BALFOUR. 211 
the mist became very thick and rain fell in quantity. Walked 
to the 434 mile-stone from Killin, and then began to ascend the 
hill. Proceeded first in the direction of Loch-na-gat, gathering 
on the way :— 
Rubus Chamzmorus Eriophorum latifolium 
Cornus suecica Splachnum sphzricum 
Visited the rocks above Loch-na-gat, and then walked round 
the corrie in the midst of mist—the effects of the late storms seen 
in the debris on the hills—appearance of the effects of water- 
spouts. Gathered :— 
Erigeron alpinus Poa Balfourii 
Myosotis suaveolens Woodsia hyperborea 
Juncus castaneus Polypodium alpestre 
»  biglumis 
and all the ordinary alpine plants. Abundance of Cysdopieris 
montana on rocks to the west of Loch-na-gat. 
Ascended to the top of Ben Lawers, which was reached about 
3p.m. Near the summit got Draba rupestris, Cetraria tslandica. 
The wind on the summit was very strong, accompanied with 
mist and rain. Descended from the summit by the aid of the 
compass, taking a S.W. direction. Reached the glen leading to 
len Lyon, and thence proceeded across the flanks of Cat- 
yaheaman to Loch Tay. Reached the inn about 6.30 p.m. 
thoroughly drenched. On our return home at night found 
Mr. Hugh Macmillan, who had arrived from Aberfeldy in the 
morning with the view of ascending Ben Lawers. 
Peltidea venosa is abundant on walls near Killin. 
Tuesday, 7th August 1855. 
This morning was wet, misty, and unpromising, and the party 
found it impossible to ascend any of the hills. Dr. Greville, on 
account of the weather, left for Edinburgh at 1 o'clock by the 
coach passing through Stirling. He took with him my packet 
of dried plants, including Cystopteris montana, also some roots of 
it as well as of Polypodium altestre, Woodsia hyperborea and 
Draba rupestris. 
