24 
maceous lorice, which he described, last winter, as containing 60 spe- 
cies of Diatoms; and that he had now found in it upwards of 140 
species, which beats all the richest deposits known. Even at 60 it 
was far the richest. Besides the new species doubtfully indicated in 
his former paper, which Smith had named Eunotia incisa, he had 
found another and a very beautiful species, new not only to him, but 
to all those who had yet seen it or a figure of it. It is a Pinnularia, 
which, provisionally, he had named P. hebridensis. It is but scarce 
in the deposit, a large and populous slide rarely yielding more than 
one specimen, and often none at all; and as yet he has not been able 
to find a trace of it in any other deposit within his reach; nor is there 
anything like it in any work he had seen. As to Eunotia incisa, it 
occurs in a deposit from Lapland, in that from Lunebeg, and in one 
from the banks of the Spey ; and it seems remarkable that it has been 
so long overlooked. P. hebridensis is small, its length from .00125 to 
0026 inch, and it has, like P. lata, P. alpina, and P. distans, only 9 
or 10 costz in .001 inch; but all these are three or four times larger, 
and all on the side view are widest in the middle, whereas P. hebri- 
densis is slightly contracted there ; but it has the general characters 
of these three species, from the fewness and thickness of the costz. 
The following papers were read :— 
Botanical Trip to the Grampian Mountains. 
‘ Botanical Trip to the Grampian Mountains, in August, 1853; by 
Professor Balfour. 
In this trip Dr. Balfour was accompanied by Messrs. Gilchrist, 
Barclay, Jenner, Lawson, Mustapha, Katib, Soubki, Alex. Cowan, 
Charles Cowan, Cunningham, Young, Wood, Ross, Ogilvie, Cropper, 
and Bayley. He gave a general account of the Clova and Glen Isla 
district which was visited, and noticed the rare alpine plants gathered. 
He offered some observations on the remarkably limited distribution 
of Oxytropis campestris and Lychnis alpina, which were confined, the 
former to a single rocky projection in Glen Fiadh, and the latter to a 
small mountain summit called Little Gilrannoch. These plants only 
spread to a small extent from a centre. Besides the usual alpine 
plants, the party gathered a profusion of Polypodium alpestre, in 
various states. In Glen Fiadh the plant was small, and very little of 
it was in fructification. It this state it is difficult to distinguish it at 
first sight from Athyrium Filix-feemina. In Glen Dole the plant was 
also seen abundantly, but in most parts sparingly in fructification. 
At the upper part of the glen, near the falls of the White Water, and 
