NOTES ON A CRUISE IN CLYDE WATERS. 157 



From Sheep Island we proceeded by the Scart Rocks, which 

 appear to be perches only, not breeding places, of the Cormorant 

 and Shag, to Glunimore. A Shag left as we approached, and 

 the first incident in our visit, after clambering over the huge 

 rocks here, was the finding of a nest of this species by Dr. 

 Gilmour. It contained three eggs. A Great Black-backed Gull's 

 (Larus marinus, Linn.) nest with three eggs was also found. 

 Herring Gulls' nests were common. Two pairs of Black Guille- 

 mots were seen, and Mr. Robertson succeeded in finding two 

 nests. The nest I saw was about three feet in a crevice, the 

 eggs being laid on a cluster of little pebbles. A Brown Rat 

 (Mus decumanus, Pall.) was found dead on this islet. This 

 species is common here, according to Mr. Thomson, the Sanda 

 Light-keeper. 



We next proceeded to Sanda, but had only time for a brief 

 visit. Since our last visit Mr. Watt has received from Mr. 

 Robert Thomson, of the Lighthouse, some further information 

 regarding the mammals occurring there. Otters (Lutra vulgaris, 

 Erxl.) are often seen, and in January, 1899, one frequented the 

 little port near the Lighthouse gardens. In the same month two 

 half-grown seals (Phoca vitulina) were killed on the north side of 

 the island. Mr. Alexander Gray, Curator of the Millport Marine 

 Biological Station, informed Mr. Watt that up to twenty-five years 

 ago two Grey Seals (Halichoerus grypus (Fabr.)) were regular 

 frequenters of the port near the tenant-farmer's house, and that 

 they disappeared without any known reason, say about 1874. 

 The Common Rat {Mus decumanus, Pall.) is very plentiful on 

 Sanda, according to Mr. Thomson. Land shells as follows were 

 collected on Sanda : — Hyalinia cellaria (Mull.) ; Helix rotundata, 

 Mull. ; H. aspersa, Mull, (fairly typical examples) ; H. nemoralis, 

 L., 00045 ; H. hispida, L. (the darkest (most red) may be var. 

 sub-rufa, Moq.) ; Pupa cylindracea (Da Costa); Clansilia perversa 

 (Pult.) ; Cochlicopa (Zua) lubrica (Miill.). 



The following plants observed on this visit are not in the 

 list published in the account of our first visit to Sanda (Trans. 

 N. H. Socy. Glas.. V. (n.s.), pp. 203, 4) : — Nasturtium officinale, 

 R. Br. ; Brassicn sinapistrum ; Vicia angustifolia, Linn. ; Spirea 

 ulmaria, Linn. ; Sedum acre, Linn. ; Conium maculatum. Linn. ; 

 Anthriscus sylvest?*is, Hoffm. ; Achillea millefolium, Linn. ; Ver- 



