GEOUND-WOOD PULP. 



67 



Similarly, jack pine, which is also unsatisfactory for news-print pur- 

 poses, can be used very effectively in the manufacture of box boards. 

 When combined with a large proportion of sulphite any of the woods 

 tested, except the hardwoods, should produce a satisfactory manila 

 of a color other than white. For the manufacture of wood-pulp 

 boards, jack pine, tamarack, loblolly pine, and larch, in addition to 

 the woods mentioned as suitable for news print, should furnish accept- 

 able material. When high color is desired, and a somewhat poorer 

 one in the center of the board is not objectionable, black gum or 

 poplar could be used as a liner, if combined with a small percentage 

 of sulphite. In the manufacture of box boards from steamed wood 

 all of the conifers tested could be utilized, except where the product 

 was to be a strong container board. The spruces, however, will yield 

 a steamed pulp suitable for almost every kind of container. 



It will be noted that the great majority of the substitute woods are 

 confined to the West, while the ground-wood industry at present 

 obtains the bulk of its supply of raw material from the East. The 

 industry, however, is really a frontier one. It must have a plentiful 

 supply of wood and an abundance of cheap power, two things not 

 readily obtainable in settled communities. As the regions in which 

 the industry is now centered develop it will have to move on to other 

 and less-settled ones. On the National Forests are immense quantities 

 of many of the woods tested and abundant opportunities for power 

 development. 



APPENDIX A. 



List of tables contained in Appendix A. 



Species. 



Grinding 



data. 



Page. 



Quality 

 test data. 



Page. 



White spruce: 



Table No. 

 5 

 6 

 8 

 9 

 10 

 11 

 12 

 13 

 14 

 15 

 16 

 17 

 18 



19 

 20 

 21 

 22 

 23 

 24 



25 

 26 



27 

 28 

 29 

 30 

 31 

 . r >7 



68 

 74 

 86 

 88 

 90 

 92 

 93 

 94 

 95 

 96 

 98 

 99 

 103 



104 

 106 

 108 

 110 

 112 

 114 



115 

 116 



117 

 118 

 119 

 120 



121 

 148 



Table No. 

 7 



78 



Cooked 





Balsam fir 



33 

 34 

 35 

 36 

 37 

 38 

 39 

 40 

 41 

 42 

 43 



44 

 45 

 46 

 47 

 48 

 49 



50 

 51 

 52 



53 

 54 



55 

 56 

 58 



124 



Red fir 



125 



White fir 



126 



Alpine fir 



127 



Amabilis fir 



128 



Lowland fir 



129 



Noble fir 



130 



Hemlock 



131 



Western hemlock 



131 



Tamarack 



132 



Western larch 



134 



Lodgepole pine: 



Montana 



135 



California 



136 



Western yellow pine 



137 



Jack pine 



138 



Loblolly pine 



139 



White pine 



140 



Enpelmami spruce: 



Montana 



141 



Colorado 



142 



Sitka spruce 



143 



White birch 



144 



Aspen 



144 



Black gum 



145 



Mixtures of wood 



Woods for "commercial puips" 



146 

 150 



Conditions of cooking wood prior to grinding, Table 32, page 123. 



