of snow, and I think that at this season, an elevation
of 11,000 feet is required _in open places_ to secure the presence of
snow: it is obvious that local circumstances, such as shelter, etc. may
cause it to descend nearly to 9,000 feet, and it is as obvious that snow
will descend lower down a mountain of 15,000 feet high than one of
12,000; the difference in the beds of snow causing a greater reduction of
temperature in the one than in the other. In an isolated mountain, an
elevation of 11,000 feet will be required for the presence of snow in
May.

At 8,000 feet, Baptisia, Viburnum canum, Umbellifera toxicaria,
Colquhounia, Deutzia, the Symphoria of Teemboo.

At 8,200 feet, Salix, Abies spinulosa straggling, Rhododendron
microphylla commences, the bruised has a terebenthaceous odour, Ilex,
Gaultheria flexuosa, Parus major: variegated shortwing, Papilio
machaonires.

At 8,300 feet, Saxifraga ligularis.

At 8,400 to 8,500 feet, Limonia, Viburnum grandiflorum or canum, Berberis
asiatica, Mespilus microphyllus, Populus oblonga, Rhododendron ochrolena,
Clematis grata viola lutea,* Epipactis, Hemiphragma.

At 8,700 feet, Rhododendron microphyllum very common, Ribes, Bupleuri
sp.,* Rosa fructibus hispidis,* Rubia hispida, Sambucus, Berberis
integrifolia, an vero distincta.

At 8,800 feet, Viola pusilla, Fragaria vesca and lutea, Baptisia, Rosa,
Sphaerostemma, Clematis grata, Pinus pendula, etc.

At 9,000 feet, commencement of sward, no trees, except stunted shrubs of
Pinus pendula, Mespilus microphyllus, Baptisia, Gnaphalium Pedicularis,*
Rosa, Bistorta,* leaves with margins not united to the margins of
pitchers of Nepenthes and Cephalotus, Pteris aquilina, Prunella,
Rhododendron microphyllum, Euphorbia, Taxaxacum, Potentilla, Thymus,
Primula Stuartii.

At 9,100 feet, Hyperica brachiata of Moflong.

At 9,300 feet, Morina Wallichiana, Osmundioid, Dipsacus, Scabiosa?
capitulo nutanta, Verbascum, Juncus, Epilobia sp.

At 9,400 feet, Salix shrubby, Cyperus fuscescens of Tassangsee, dwarfed
Larix.

At 9,500 feet, Anemona aurea commences, covering in some places the
sward; it straggles down in favourable places with Iris angustifolia, to
9,300 feet, Primula Stuartii, Rhododendron microphyllum, Gnaphalia,
Euphrasia.

At 9,800 feet, southern face of ridge bare, northern thickety, consisting
of Rhododendron fruticosum, foliis ellipticis basi cordatis punctato
lepidotis, Salix, Berberis, Pyrus aria, Bambusa, Tetranth