88 
MR. 11. X. DICKSON OX THE CIRCULATIOX OF THE 
north coast of Europe, and again sonth and west of Spitsbergen. North and east of 
Iceland the distribution of temperature has probably undergone little change. 
Between Iceland and Greenland the cold-water area has increased, the line of 10° 
having inoved to the north-east. Temperature seems somewhat higher in the middle of 
Davis Strait, hut there may he more ice-cold water close to the coast of Greenland. 
Salinity observations are unfortunately almost wanting for August along the 
parallel of 40° N. and 60° N. In the southern latitudes there seems to be little 
change. The line of 33 |U’o mille is in nearly the same position west of long. 50° Ah, 
hut the 32 line is ]io closer to the land. The ends of the 34 and 35 lines in lat. 
46° N. are in the same place as last month, and the part of the 36 line shown is also 
unchanged. In lat. 50° N. the 35 line is bent a little more to the south, and the 
35‘5 line more to the east, indicatino; a further lowering of salinitv towards south and 
east. Salinity seems to have increased slightly oft‘ the mouth of the English 
Channel, and a tongue of 35 water protrudes further tlirough the Straits of Dover 
into the North Sea. The axis of 35 extending into the North Sea, from the north, 
has withdrawn somewhat. 
South of Iceland, the line of 35 salinity has moved closer inshore, and off the 
Faeroe Islands its position is also a little more to the north. The form of the line 
lias, however, changed ; it now runs out to the east, greatly narroAving the belt of 
water oA'er 35, and the 34 line east of Iceland has moved soutliAAmrd and taken a 
similar form. 
The line of 35 folloAvs the coast of Norway, packing the 34 and 33 lines close in 
hetAveen it and the land, and forms a loop south of Spitsbergen in about long. 20° E.— 
which bends round AvestAA’ard and probably joins the other part of tlie line by folloAving 
the meridian of 0°. An isolated patch of 35 AA'ater appears north of the AVhite Sea. 
A considerable freshening lias apparently taken jilace to the north of Iceland, and 
there noAv seems to he no 35 Avater hetAveen Iceland and Greenland. It appears 
also from the form of the 35 and 34‘5 lines that a considerahle loAA erincr of salinitA" 
has taken place in the area to the south-east of Cape FareAvell. 
The principal changes are therefore—small changes in the Ioav latitudes ; e([uali- 
sation of tenpieratures and salinities AA'est of long. 50° Ah ; slight rise of tempera¬ 
ture in mifl-Atlantic ; the colder fresher AA’aters form a AA'ider belt to the east and 
south-east of Iceland, and they occupy more of the Ilenmark Strait and the area 
east of Carjie FareAA’ell; temperature has risen in mid-Atlantic hetAveen 50° and 
60° N. lat., salinity has fallen a little in the southern jiart of that area, and more in 
the northern. 
Septemher, 1806.—In the south-Avest the 25° isothermal folloAvs the 40th j^arallel from 
long. 50° AA. to long. 70° AA., and between these meridians temperature is unchanged 
nortliAA’ai'ds to the land, except for a A’ery iiarroAv strip of cold Avater (under 15°) close 
inshore. This strip extends AvestAvards, south of Long Island to Ncav AArk, bending 
the 20° line soutliAvard, and eastAA’ard and south-eastAA ard past Cape Itace, Avhere it 
deflects the 15° and 20° lines soullnvard. 
