ISLAND FLORAS. )xili 
NAME OF PLANT. Orkney. Caithness. Shetland. 
Campanula rotundifolia ee Noise. Kes. *... -Wes 
Lysimachia nemorum ..._ ... Wer, 2). MES? ae SING 
Myosotis palustris ... ... ... Mesmus.: ». MEN a4 NG 
Rhinanthus greenlandicus _... Namstii) Nov... + Wes 
Euphrasia borealis... ... ... Note aii (esi 2:5) (7 ¥es 
Salix phylicifolia ... ... ... Ves d.4 1 Yes.) 25 Ne 
Tofieldia palustris ... ...... Nog.) Yes nn NG 
Potamogeton alpinum ... ... Nowirin | esha 2.4 No 
Saxifraga hypnoides ... .. ¥eg:) 2.4/1 * Yeas. 10 No 
Potamogeton prelongus...... Yes? (2 is5')/¥esm2o1 1 NO 
guncus Baltieus ... 0 ...0 ss Nook.) Vesics + No 
Buzala epieata.. 2... 22.) 2... Nas. 8 Ves 6 eer 
te ee Sey ys + <9 (oes, one ING: Fd iM eNe ver NO 
Agropyrum junceum ... ... Ves uty Wee. NO 
Polystichum lonchitis ... ... Vests, (s.4., esi) s.4 », No 
Phegopterus Dryopteris sn No: 2. Yesw i” Yes 
Lycopodium annotinum... ... Yea, Wea: 2 No 
Isoetes echinosporum ... ... Nor ts: (Nada Wes 
The instructive lesson we hereby learn from the 
remarkable similitude of the floras accords with 
what geologists tell us, and with what botanists 
have said regarding similarly situated islands and 
continents. We know that if the land level were 
raised a few hundred feet, all the islands to the 
north and west of Scotland would form part of the 
mainland. We have positive proof that sea-beaches 
have been 50, 100, 150, and even 450 feet higher 
than at present, as seen on the west coast of Scotland. 
In Orkney, we have proof of earth movement in 
an opposite direction, and both prove the frequent 
fluctuations of land and sea-levels in past geological 
times. The remains of peat mosses of considerable 
extent have been found in several parishes as low as 
mean ebb tide. Investigations would no doubt show 
