CXxiv PROCEEDINGS—PERTHSHIRE SOCIETY OF NATURAL SCIENCE. 
cowslip. Passing Knowehead Farm, the Muir of Durdie w T as reached. 
On it Lycopodium alpinum was noticed, at probably the lowest altitude 
which it attains in Perthshire. In pools specimens of the curious 
Vo/vox globator were obtained. In due time the spot for which we 
were bound, viz., the Den of Pitroddie, came into view. Here we 
met with an unpleasant surprise, by discovering that a recent exten- 
tion of the -quarry in the Den has resulted in the destruction of one 
locality for two rare Perthshire plants, namely, Astragalus glycyphyllos 
and Eupatoriu? 7 i canncibinum. Along the side of the Den runs 
a large trap dyke, on and about which these plants grew, but which 
now presents the appearance shown in this photograph,* taken on this 
occasion by Mr. W. Ellison. Some of the other interesting plants of 
the Den are, however, likely to escape, and several of them were 
observed during our explorations. These included Lychnis Viscaria , 
Viola hirta , Astragalus Hypoglottis , Myosotis collinum , and Allium 
vineale . Primula veris was abundant, and fertile spikes of Equisetum 
pratense were seen in two distinct places. We searched in vain for 
Asplenium Ceterach , which has, I believe, been found in this Den. 
We returned home by the Muir of Durdie, Balcraig, and Gannochy, 
but without finding anything more worth recording. 
On 13th June we proceeded from Cargill Station to Delvine. 
Near Meikleour Village a quarry or sandpit attracted considerable 
attention. Here, on the top of a section of Old Red Sandstone, is 
a considerable thickness of sand, perforated all over by the burrows 
of Sand Martins, of whom a perfect cloud were flitting to and fro in 
the quarry. Mr. W. Ellison, who has made a very interesting 
photograph* of the place, has counted the nnmber of burrows, and 
finds that there are not less than six hundred. 
In a marsh near Meikleour some interesting plants were found, 
including Typha latifolia , Ranunculus Lingua , Rumex Hydrolapathum , 
Carex disticha , C. paludosa , C. vesicaria , and what looks like 
a hybrid between C. vesicaria and C. ampullacea , but which 
has yet to be studied. Passing on to Delvine Inch, we observed 
on or near it Teesd.alia nudicaulis , a curiously pale form of 
Anthyllis Vulneraria , Sedum rupesti'e , Asti'agalus glycyphyllos (which 
seems to be increasing in quantity), A . Hypoglottis , and Lupinus 
perennis. Near Delvine Inch we were met by Sir A. M. Mackenzie, 
who had invited the Society to inspect the well-known Roman and 
Pictish Camps on Inch Tuthill. After having done so we resumed 
our botanical explorations. Near the “Pictish City'’ Co?ydalis 
claviculata is abundant, and Equisetum pratense on the river embank¬ 
ment. Further up the river Vicia sylvatica was noticed, and a new 
station for Astragalus glycyphyllos. Thence some of the party 
returned home, whilst others proceeded to Caputh Hill, from which 
a magnificent view was obtained, and a few more plants noticed, 
including Echium vulgare, Anthemis arvensis , Verbascum Thapsus , and 
Arabis hirsuta . Veronica hedercefolia was also seen upon the rocks 
—rather a curious locality for this plant. 
On 20th June we went to Dunkeld, and visited the picturesque 
* The photograph is now one of the series in the Lecture-Room. 
