CONSERVATIVE LUMBERING. 



49 



TRANSPORTATION. 



After the skidding, the logs may be transported to 

 the sawmill in many different ways. Sometimes they 

 are loaded on sleds and 

 drawn over carefully made 

 ice roads to a logging rail- 

 road or to the bank of a 

 stream. When the stream is 

 not swift or deep enough to 

 cany the logs of itself, splash 

 dams are built, in which 

 great quantities of water are 

 held back for a time. (See 

 PL XV.) When such a dam is opened the water is set 

 free, and great numbers of logs may be driven far down 



FIG. 32. Logging white cedar by 

 team. New Jersey. 



FIG. 33. Logging by rail. Sierra Nevada Mountains, California. 



the stream by the sudden flood. In larger streams the 

 logs are sometimes made into rafts, or they may be 



