LAKES. 
235 
more important, and as we shall see from the follow- 
ing table, there is a great contrast between the two:— 
Surface Level. 
Constance 
395 metres 
Walen 
423 
„ 
Zurich 
409 
11 
Zug 
4 1 7 
Lucerne 
437 
>» 
Sempach 
5°7 
55 
Brienz 
566 
Thun 
56° 
1) 
Geneva 
375 
Neuchatel 
432 
»J 
Bienne 
434 
Orta 
290 
11 
Maggiore 
194 
»> 
Como 
199 
11 
Lugano 
266 
11 
Varese 
239 
11 
Iseo 
i 85 
11 
Garda 
65 
n 
Greatest Depth. 
Bottom Level 
252 metres 
143 metres 
151 
»» 
272 „ 
142 
11 
267 „ 
198 
>1 
219 .. 
214 
223 „ 
87 
420 „ 
261 
11 
305 » 
217 
J> 
343 » 
3°9 
11 
66 „ 
'53 
11 
279 » 
74 
11 
36° „ 
'43 
11 
147 >. 
655 
11 
-461 „ 
414 
11 
-215 »» 
288 
11 
— 22 „ 
29 
11 
210 „ 
346 
11 
— 161 
346 
11 
-281 „ 
These depths are the more remarkable if we 
compare them with certain seas. For instance, the 
English Channel is nowhere more than 50 metres in 
depth, the North Sea, 60. 
The original depth of the Lakes was, moreover, 
even greater, because the present bottom is in every 
case covered by alluvium of unknown, but no doubt 
considerable, thickness. 
