(Reprinted From the ‘Transuctions of the Edinburgh Field Naturalists’ 
and Microscopical Society,’ Session 1897-98.) 
THE UPPER ELF LOCH, BRAIDS, (fe~4oryA ) 
[SzconD Paper. ] 
By Mzssrs THOMAS SCOTT, F.L.S., anp JOHN LINDSAY. 
IN continuation of our investigations with regard to the 
micro-flora and the micro-fauna of the Upper Elf Loch, we 
now beg to submit to the Society this second, and concluding, 
report, the result of gatherings taken at six different dates 
since the close of our first paper—viz., June 26, July 27, 
September 11, and November 20, 1897; February 5 and 
April 23, 1898. Appended to this paper will be found a 
list, arranged alphabetically, of the motile Algz, Desmids, 
Diatoms, Rhizopods, Infusoria, Rotifera, and Entomostraca 
observed in the gatherings taken throughout the whole period 
of these investigations, from March 1896 to April 1898. 
These groups have been selected because they include many 
and varied forms interesting to microscopists; but it is not 
to be inferred that the list is an exhaustive one, though it 
is believed to be accurate, as far as it goes. 
We shall now proceed to select from the groups above- 
mentioned any forms collected since the close of our first 
paper which may seem to call for special notice. Before 
doing so, however, a few words may be given to a rather 
remarkable circumstance in the history of this little tarn— 
viz., the large and rapid increase in the growth of rushes, 
grasses, and other vegetation, which has lately taken place at 
the north-west part, being the only portion of the loch to 
which the public have access. This growth began in the 
autumn of last year (1897), and continued throughout the 
winter and following spring, with the result that now the 
total water area is less by fully a third than it was in the 
spring of 1897. The loch is never cleaned out, and all that 
keeps rank vegetation in check is the rigour of winter, which 
usually cuts down much of the growth made during the pre- 
vious season. The weather in this city, from the middle of 
