THE ALG OF THE CLYDE SEA AREA, : 211 
any one time, though varying with the season; this is due to 
rapid mixture and up-welling in the Irish Chann el. In the lochs 
within the Plateau there is a different distribution of temperature. 
The temperature of the surface water has the greatest range; it 
comes be a maximum (55° to 60° F.) in August and September, 
mum (30° to 40° F.) in January and February. In the 
isolated be aie the minimum (40° » sal F.) at the bottom does not 
r till June or July, and the maximum is retarded till January 
be Velesans, when the lowest eetcateca: occur at the surface. 
Off-shore winds in these lochs bring cold water to the surface 
d ig summer si and warm water to the surface during 
the winter months. 
ome of these forms are limited to one 8 look on the west 
coast ; for instance, Conchecia p pay which is abundant in Loch 
Etive. This form has never been taken in any of the lochs of the 
Clyde sea-area, although Kucheta norvegica, with which it is 
associated in i.” Nya Etive, occurs pesniactly in Upper Loch Fyne 
ye 
Papers dealing with Clyde Sea-area. 
Murray, Joun.—The Physical and Biological Conditions of the Seas 
and spo gaa ee ne rth Britain, Proc. Phil, Soc. Glasgow, 
Murray, Joun.—Temperature Obser vations in the Clyde Sea-area, 
&e., Journ. Scot. = aye 8rd Ser., a = and iv., 1886, 
1887; and Proc. Ro Soc. Edin., vol. x 
Mts H. R.—C Sein of the Clyde Sea Area (with oro- 
raphical pb) Scot. Geogr. Mag., vol. iii. pp. 15-21, 1887. 
ra ra R.—Physi eres ‘ei, in the gh s Sea Area, 
Dicxte, A—On the Chemical Composition of the Water composing 
the Clyde Sea Area, Proc. Roy. Soc than, vol. xiv. pp. 422-427 ; 
vol. xv. pp. 238-856, 1887 and 1 i 
P 
