39 
Part V.] Pearson: Note on the Utilization of Bamboo. 
Comparing the cost of other unbleached paper-pulp in Calcutta 
we obtain the following figures :— 
Unbleached Sabai 
grass soda pulp, 
per ton 
Unbleached spruce 
sulphite pulp, 
per ton 
Unbleached bamboo 
soda pulp, 
per ton 
Rs. A. P. 
Rs. A. P. 
W 
ce 
► 
162 2 0 
150 0 0* 
118 6 0 
to 
155 0 0 
In calculating the cost of manufacturing bamboo-pulp, various 
estimates have been put up by experts, based on their laboratory 
experiments. Raitt, in his report, estimates Rs. 92-8-0 as the cost 
of preparing unbleached sulphate bamboo-pulp. These figures are 
for unbleached bamboo-pulp near Rangoon. His figures differ from the 
above figures in that his chemicals cost Rs. 29-14-0, as against 
Rs. 48-0-0 in the above estimate, otherwise they are more or less in 
agreement.f Sindall, on page 43 of his report entitled “ Bamboo for 
paper-making, ” 1909, estimates the cost of manufacturing bamboo 
unbleached pulp at £5-10-0, a most optimistic figure. 
In arriving at the figure of Rs. 118-6-0 for unbleached bamboo-pulp 
in Calcutta, it will be seen that all items have been somewhat liberally 
estimated, probably when extracting bamboos on a large scale it will be 
found possible to do so for less than Rs. 10 per ton, while the sum fixed 
for labour and fixed charges, Rs. 20 in all, is a higher figure than that 
generally adopted by experts. 
In spite of the liberal estimate given, the total cost of producing 
unbleached bamboo -pulp works out at Rs. 32 per ton lower than 
that for imported unbleached sprwce-sulphite and Rs. 24 per ton lower 
than the cost of producing unbleached Sabai grass-pulp. 
* Note— This figure includes the manufaturer’s profits, while the figures given for 
Bamboo and Sabai grass soda pulp do not include his profits. 
t Note.— The reason for the difference in cost of chemicals is that the amount of 
recovery, as accepted in this report, is based on that obtained when working with grass, 
whereas Raitt maintains that greater recovery can be expected from Bamboo. His 
contention is no doubt correct, but until more reliable data are forthcoming on this 
point it is safer for the present to adopt the higher figure. 
[ 196 ] 
