406 



WOOD TRANSPORT BY WATER. 



oThalham 



anchored in the lake. This practice is in vogue on the Tegern 

 lake (Fig. 271). The wood floated down the river Weisach 

 runs into the lake at a, is bound into temporary rafts and 

 drawn by the anchored boat (m) to about the middle of the 



lake, whence the mountain- 

 wind blows it to d at the 

 other end of the lake. The 

 rafts which are collected 

 there are opened one by one, 

 and the wood floated on the 

 Man gf all river to the timber- 

 depot at Thalham, where it 

 reaches the railroad to 

 Munich. 



(e) Completion of the 

 floating. All the wood 

 which has been launched 

 by no means floats steadily 

 down to the boom. Fre- 

 quently, a considerable per- 

 centage of the launched 

 pieces remains on rocks, 

 shoals and other inequalities 

 of the channel, sticks under 

 its banks, or remains float- 

 ing in the still water near 

 the banks. All this wood 

 should now be set free, 

 drawn into the stream, or 

 else placed so that it may 

 be caught by the next flood 

 from a reservoir, or natural 

 flooding of the river, and 

 carried down to the boom ; 

 this operation is termed after-floating. This work, which 

 is often protracted well into the summer, is commenced 

 usually from up-stream, but if after all the reservoirs are 

 exhausted, or owing to unfavourable weather, the water in the 

 channel is very low, only a portion of these stranded 



. 1^71. Floating wood across a lake. 



