418 . PAPER PULP 
That bamboo is readily resolved by the soda process of treatment to a 
fiber which is easily blended has been proved beyond doubt, and further 
experiment in this direction is scarcely necessary. The fiber possesses 
the requisite length, strength, and felting capacity to meet the paper 
maker’s demands, and the quantity of resistant cellulose per unit weight 
of the raw material is sufficient to warrant its extraction. 
The following quotations, also from Richmond, give informa- 
tion concerning the sulphite process on Schizostachyum lu- 
mampao: 
Bamboo chips prepared as described above, in lengths varying from 
1.270 to 2.540 centimeters, but uncrushed, were well screened from dust 
and dirt and packed into a stationary, upright, lead-lined digester and 
heated with direct fire in the presence of sulphite liquors of different 
concentration and under varying conditions of temperature and time. 
Thirty-seven separate digestions were made, but in no instance was I 
able to produce from bamboo a pulp easy to bleach with bleaching powder, 
the universal bleaching agent employed in the industry at the present 
time. 
The process yields fully 50 per cent of unbleached pulp and with a 
much lower sulphur consumption than is required in commercial practice 
for wood. Well prepared, but uncrushed chips pulped readily with liquors 
of ordinary strength in six to eight hours, but the unbleached fiber was not 
as light in color as sulphite spruce and could only be used in the 
unbleached condition for wrappings, tags, etc., where strength, rather 
than color, is the important consideration. It is needless to say that 
I varied all the conditions of the treatments in every conceivable manner 
with the main point in view of producing a pulp which would bleach 
readily, and with a reasonable consumption of bleaching agent, but with- 
out success. If bamboo pulp were most suited for use in an unbleached 
state, then the sulphite process should be adopted by all means, but the 
material is not sufficiently light in color to be mixed with mechanical 
wood pulp in preparing news print paper, besides it is too good a fiber 
for the latter or for wrappings, for which it is entirely suited so far as 
color is concerned. In my opinion, bamboo fiber is eminently fitted for 
paper for books and for certain grades of writing and lithographic papers, 
either alone or when blended with rag or sulphite wood pulp. 
A few data selected from the more successful sulphite experiments are 
given: [Table I.] 









TABLE I. 
se ee a es Pell pa 
| Composition of the liquor. | me ries Repl < & SHE) | 
| | 3 £ n Bs 
= Bt | Mees ed = ev 5 ra 
2 a6 Rh | oh 
es ae | | Time | Maxi-| § = 5 ig = | Color. 
Com- | fe nL) | mum) w Ho 
Lime. | Tot! | pinea hee | reaeh Tore tem- s ra te ae 
| acid. ~ | maxi- | *|pera-| 3 s as 
| | | }mum. | | ture. | RG x a 
| ve A AE ee aS | a is t+ Snes 
| | 
| | | | | | Met- | 
|Per ct. Per\ct.|Per ct. Per ct. Hrs. | Hrs. °C. |Per ct.\Per ct.| ric. | 
Lbs gs Wage Shir shee el) Diep 34 7 145 | 52.4/ 30 | 149.6 | Poor white. 
| etapa 2 1. 28/4 bie Tet 3.104) 1) 98 7| 150] 50.2) 27.6 | 240.0} Do. 
| D Ce eee 1.09 3.39 1.25 2.14 | 4 | 9 145 | 50 | 24.12 | 240.0 | Do. 
hy <a 1.12) 3p71) 2:28)) 02:48] 08 |. . "Bi 45 | Sb eRe 228.) ete 
! | 
