89 



representative samples have been selected, chemically examined and 

 tested. The results ot these investigations are given in the following 

 table :— 



PHYSICAL AND CHEMICAL CONSTANTS. 



Thickness 



Furnish per sheet 

 And Description. decimals 

 of an inch. 



Breaking 

 Strength 

 lbs. 



Stretch 

 per 

 cent. 



\ Folding 

 Test. 



Mois- 

 ture per 

 cent. 



Rosin 

 per 

 cent. 



Loading 

 per cent. 







Way of Machine. 









I. Lallang Bleached, sized, 

 loaded, " Ordinary 

 boil Caustic Soda." . . 



.0067 



10.45 



1.46 



30 



9.60 



1. 12 



2.50 



2. Lallang Bleached, sized, 

 loaded. " High Pres- 

 sure boil Caustic 

 Soda." 



.0086 



8.55 



0.70 



2.4 



10.01 



4.85 



1.62 



3. Lallang Bleached, sized, 

 loaded, dyed. " Sul- 

 phite boil." 



.0075 



10.00 



1. 10 



16 



8.82 



4.07 



8.80 



4. Lallang 70% Linen 

 Rags 30% Bleached, 

 sized, loaded, tinted, 

 " Ordinary boil. Caus- 

 tic Soda." . . 



.0045 . 



9.00 



1.50 



47 



8.41 



1.60 



2.44 



5. Lallang 75% Best Linen 

 Rags 25% Bleached, 

 sized, dyed. " Ordi- 

 nary boil, Caustic 

 Soda." 



.005 



14.96 



1.34 



125 



10.00 



3-53 



Nil. 



6. Lallang 60% Chemical 

 Wood 40% Bleached, 

 sized. "Ordinary boil. 

 Caustic Soda." 



.0079 



13.54 



0.48 



23 



9.76 



3.52 



Nil. 



7. Lallang Megass 

 30% Bleached, sized. 

 " Ordinary boil, Caus- 

 tic Soda." . . 



.005 



12.98 



1.04 



51 



1302 



2.75 



Nil. 



In some instances, paper was prepared from mixtures of hemp, 

 cotton and Lallang, and dyed with aniline colours. " No. 5 " shews 

 the effect of treating the pulp with dianil black in ad-mixture with 

 bleached linens, whilst " No. 3 " serves to illustrate the results 

 obtained by the use of indanthrene blue. 



From the foregoing figures, together with a close study of the 

 the samples obtained during the course of manufacture, it will be 

 noticed that although it is possible to produce paper from Lallang 

 Grass having a satisfactory surface and finish, all efforts made with 

 the object of improving its resistance to folding, at least when run 



