60 TRANSACTIONS AND PKOCEEDINGS OF THE [Sess. LXI. 



abundant hold for their roots. (4th) There is here a rare 

 union of flora — Hawthorn (long stemmed and very narrow 

 leaves), Honeysuckle, Scotch Eose, Juniper, Lycopodium, 

 the Common Butterwort and the rare Seaside Butterwort 

 (Pinquioda lusitanica), the Eed Bearberry, this I'are 

 Pyrus, Birch, Eowan, etc. (5th) The Eare Pyrus was all 

 of one variety, the pinnate. It was the most pinnate I 

 had seen in Arran, generally three of the lower segments 

 cut to the mid-rib, while in those found at other stations 

 rarely are even two of the lower segments thus deeply cut. 

 (Gth) This station is further remarkable as being situated 

 in the slate, while all the others are in the granite ; and 

 also from being near the sea, only three-quarters of a 

 mile from it, while those known previously are from 

 2i to 6. 



The discovery of this station is thus of special import- 

 ance, as it introduces new data into the questions regarding 

 the Eare Pyrus. 



Fourth Succcs^fid Excursion. — The Eev. Duncan M'Nicol, 

 Dunoon, informed me that the Eare Pyrus grew at the 

 stream side, near the foot of the steep ascent at the head 

 of Glen Catacol. I visited the place and found a consider- 

 able number. I ascended here Allt-na-Calmen (the Dove's 

 Glen-side Stream), the highest ti-ibutary of the Catacol. 

 In it are various cascades, and beside them are a dozen of 

 the Eare Pyrus. The peculiarity here is that it is much 

 more common than the Eowan, of which there is only one 

 tree standing. 



SUM.MAUV. 



I. By ]Mr. Smith's discovery and my own, the number of 

 main streams in which the Eare l^yrus is known to grow 

 has been doubled — from two to four. 



II. By Mr. Smith's discovery and my further search, it 

 has })een shown that the Eare Pyrus is not confined to the 

 north of the dividing ridge in the north of Arran— that is, 

 to the north of Locli-na-Davie and Loch Tana — but has an 

 established habitat several miles south of this ridge. 



III. It has been shown that it is not confined to the 

 granite area, nor to a distance from the coast-line. 



IV. Its ran^c in altitude has also been increased It 



