232 ANNALS OF SCOTTISH NATURAL HISTORY 



LITERATURE. 



CASH, J., 'British Freshwater Rhizopoda and Heliozoa,' vols. i. and ii., "Ray 



Soc.," 1905 and 1909. 

 EVANS, W., 'List of Non-Marine Sarcodina from the Forth Area,' in " Proc. 



Roy. Phys. Soc. Edin. ," xvii., 1909. 

 MURRAY, J., ' Rhizopods and Heliozoa of Loch Ness,' in " P. R. Soc. Edin.," 



xxv., 1905. 

 MURRAY, J., 'Rhizopods and Heliozoa of the Forth Area,' in "Ann. Scot. 



Nat. Hist.," 1907. 

 PENARD, E., ' Sur les Sarcodines du Loch Ness,' in " P. R. Soc. Edin.," xxv., 



1905. 

 WEST, G. S., ' Notes on some Scottish Freshwater Rhizopoda and Heliozoa,' in 



"Ann. Scot. Nat. Hist.," 1905. 



MAN'S INFLUENCE ON THE INDIGENOUS 

 FLORA OF ABERDEEN. 



By JAMES W. H. TRAIL, A.M., M.D., F.R.S. 

 ( Continued from p. 1 8 o. ) 



The following is a brief analysis of the species that there 

 is reason to believe occurred within the municipal area of 

 Aberdeen, but that have not been observed there for several 

 years, and may be regarded as extinct, with mention of the 

 causes of their disappearance so far as known : 



Cochlearia danica, L. Formerly on the estuary of the Dee, while 

 that existed, but not common. 



Viola palustris, L. Disappeared when its habitats (marshy places 

 on moors, in woods, etc.) were drained and cultivated, except 

 a very few survivors on wet shingles by the Dee. 



Sagina nodosa, Fenzl. Formerly on Stocket Moor, by the estuary of 

 the Dee, and on the Links, but now apparently extinct, unless 

 a very few plants may survive on wet spots on the low part of 

 Old Aberdeen Links. I have not seen it there for some years. 



Hypericiim perforatum, L. Formerly in the Den of Rubislaw. 



H. quadrangulum, L. In various places in Rubislaw and Gilcomston; 

 probably destroyed there by drainage of habitats. 



H. htemifusum, L. Formerly in natural pastures. 



Linum catharticum, L. In natural pastures; become extinct through 



agriculture. 

 Genista anglica, L. On moors (e.g. Stocket Moor in 1833), with 



which it disappeared. 



