REGISTRATION OF RECEIPTS. 439 



averaging the seventh or eighth part of the length of each 

 stack. Wherever the firewood is arranged in sale-lots, its 

 measurement consists simply in counting the latter. 



4. Registration of the Receipts of Wood at a Depot. 



It is quite obvious that in all wood-depots an account must 

 be kept of all the receipts of wood both as regards volume 

 and quality. The volume of the timber and of the stacks of 

 firewood is ascertained in the usual manner. A further allow- 

 ance has, however, to be made for the loss incurred during 

 the transport of the material, which also naturally involves 

 measurement of the wood before it was transported. Wherever 

 wood has been transported carefully by land, the loss is either 

 inconsiderable or absolutely nil, but when wood has been 

 dragged over rough ground, or thrown downhill, etc., there 

 may be a considerable loss of volume during transport. Loss 

 during transport by water also may vary between and 10 or 

 12 per cent. It is obvious also that the volume of the sunken 

 wood which has been recovered should be deducted from the 

 loss during floating, and that any losses occasioned by careless 

 land-transport previous to floating must be excluded from loss 

 due to floating alone. 



The following circumstances influence the loss of floating 

 wood : the condition of the works on a floating-channel ; its 

 length ; the kind of wood floated and its comparative dryness ; 

 the manner in which the wood is stacked in the forest, and in 

 the depot ; the question whether wood has been brought down 

 to the launching place on slides or roads ; also extraordinary 

 occurrences such as floods, theft, etc. 



