94 



results obtained by comparative tests on the paper used for the 

 publication of the Trinidad Mirror are enumerated in the following 

 table :— 



PHYSICAL CHEMICAL CONSTANTS. 







sheet 

 in inch. 



-J 



Way of Machine. 



c 



S 







l)jsrripti(rn ;iiv' I'lirnish. 



1 s 



eaking 

 th in lbs. 



li per cent 



ling test. 



a; 



a 



1 per cent 







Thic 

 "dec 





■0 







'0 



1 



'7, 









1 



fa 











(l) 



MEG ASS - 

 Bleached, Sized 



00070 



25 "9 1 



1-82 



3201 



10 36 





2-45 



\2) 



M EG ASS— 



Loaded, Bleached, Sized 



o'oo65 



1208 



III 



85 



11-49 



4'25 



2-88 



(3) 



Megass— 



Bleached, Tinted, l^uaded, Sized 



00075 



I3'41 



1*48 



254 



10-82 



2-41 



2-55 



'4) 



Megass (70%), SODA Pulp (30%)— 

 Ordinary Bleached, Sized 



0'0055 



1170 



1-58 



213 



10-43 





2'0I 



(i) 



Megass (28 :), Lai.lang (72%) — 

 Bleached, Sized 



00030 



12-98 



I '04 



51 



I3"02 





2-75 



ft)) 



MEGASS (47%), Bamboo (53%)— 

 Bleached, Loaded, Sized 



o"o()6o 



9"62 



0'93 



14 



9*35 



5 '24 



I -^-^ 



(7) 



" Trinidad Mirror 

 Thin 



0*0065 



9 '9.3 



TOO 



208 









(8) 



"Trinidad MirrorV'— 



Thick 



o'oiio 



18 50 



IIO 



1571 



1 9" 10 





I"5I 



Megass pulp when used by itself invariably yields a stiff hard 

 paper, no matter how it may be manipulated in the beater, and more- 

 over it is no easy matter to obtain the papers free from coarse fibres. 

 Its great strength, as amply illustrated in the case of the specimen 

 marked No. i, depends upon a system of gradual beating of the half- 

 stuff, whilst, on the other hand, it is readily liable to become overdone 

 and consequently work too " free " on the machine, the resultant 

 paper showing considerable loss in strength. Nos. 2 and 3 show the 

 effects of short sharp beating and fast running. When used in com- 

 bination with other kinds of furnish megass gives some very useful 

 products, the general nature and appearance of the papers being 

 considerably altered. The specimens obtained by admixture with 

 chemical wood and lallang pulp are especially promising, and further 

 the harsh, effects of the megass are neutralised and a softer feel and 

 altogether superior surface is imparted to the finished paper. 



It is a matter of regret that more experimental investigation 

 could not be provided in connection with the " bamboo-megass " 

 combination; however, the excellent effects obtained by running the 

 megass pulp in conjunction with lallang fibre seem to justify the 

 statements made by Mr. de Lamarre with regard to its future 

 development and enhance the prospects of ultimately making paper 



