64 



ties of clear white pine lumber required for this use. In electrical ma- 

 chinery about seven million board feet is used for minor purposes. These 

 two industries alone total 5.07 per cent of Illinois manufacture. 



Gboup D. Industries using Wood in a Minor Capacity 



If the fourth group (D) is omitted, and the situation summed up 

 on the basis of those industries which would be seriously crippled by 

 failure of wood supplies, we find that they employ 26.;)3 per cent of 

 the total labor employed in Illinois manufacturing industries and 20.40 

 per cent of the capital invested, and that 20.91 per cent of the value 

 added by manufacturing is represented by these industries. The cost 

 of materials, dealing as they do with basic raw products, is 13 per cent 

 of the total costs for all industries and the value of the products is 

 16.38 per cent of the total value of manufactured products. 



Weighting the three groups on the basis of persons employed, 

 capital invested, and value added by manufacture the results are: 



Per cent 



A. Industries dependent entirely on wood 3.18 



B. Industries making extensive use of wood. .. .14.83 



C. Industries dependent on wood pulp 4.73 



Total largely dependent on wood 22.74 



Economic Value of Wood Industries 



Allowing for materials other than wood used in these industries, it 

 is probable that wood and its uses in manufacture represents between 

 8 and 10 per cent of the value of all raw products so used, and that 

 its economic value is not less than this ]>roportion to the total manufac- 

 turing industry of the state. With failure of the supply, notably of 

 hardwoods, a very large percentage of these industries will be forced 

 either to discontinue operations and seek other forms of investment or 

 to produce a more expensive product of less relative value, or else to 



