12 THE FOREST LANDS OF FINLAND. 
After some twelve hours steaming through among these 
numerous and multiform richly-wooded isles, all of them 
picturesque and beautiful, we reached Nyslot, which is 
situated at a point which marks the connection between 
ae lower and the upper portion of the lake, or system of 
akes. 
Nyslot, or Newcastle, according to Murray, apparently 
must bave taken its name from the outer works surround- 
ing an old castle on a small island adjacent to the tower, 
built in 1475, Nyslot was ceded to Russia by the treaty of 
Abo, and the outer works, the ruins cf which remain, were. 
constructed by Saranoff, in expectation of a war with 
Sweden. In 1788 the castle was blockaded by the Swedes, 
but not taken. The two principal towers of the castle 
are severally called Kirch and Koch, and the former was 
frequently used as a State prison. Skeletons with chains 
attached to them were found some years ago in the ruins 
of the walls, supposed to be remains of prisoners who had 
been immured. The tower is situated on a promontory 
in the narrow strait between the two principal basins of 
the Saima See. It attracts many visitors, who come 
hither to enjoy the beautiful views which open out io 
every direction. Here are situated extensive saw mills, 
the Nyslot Sag, or Savolinner Salva, belonging to Messrs 
Hood & Co., of London. 
At Nyslot we pass from what is known as the Saima 
Lake, and enter on the upper series of lakes connected 
with it, and connected with others bearing different 
names, but not always separated by well-defined manifest 
boundaries. Amongst others of these upper northern 
lakes are Lake Kallavesi, upon a peninsula projecting 
into which is situated the town of Kuopia; and the lakes 
Paapavesi, Haukivesi, Piblagavesi, Puruvesi, and Pielis- 
jaervi. The last-named is about 75 miles in length from 
north-west to south-east, and 15 miles in extreme breadth, 
Qn its south bank is the town of Eno, about 90 miles east 
