Table XXI.- 



-Hides 



used 



in 



Australian cattle hide: 







No. 



1 









No. 



2 









No. 



3 









Chinese 



; cattle hide 









No. 



1 









No. 



2 









No. 



3 









No. 



4 









No. 



5 









No. 



6= 















" Carabao. 



X, A, 6 Gana: Leather Industry of the Philippines 367 



ing method was put into effect in a Filipino tannery which 

 was then operating under the old methods. This was done as 

 an object lesson, in spite of the unfavorable circumstances which 

 it was anticipated would be encountered. A leather resulted 

 which was odorless, firm, and entirely satisfactory as a sole 

 leather. For this purpose nine hides were chosen as indicated 

 in Table XXI. 



Kilos. 



16.5 

 23.5 

 24.0 



19.0 

 16.0 

 19.0 

 21.5 

 18.5 

 25.5 



The hides were washed in fresh, clean water supplied from 

 a near-by artesian well. The washing was repeated five times 

 and, together with soaking, required seven hours. 



Table XXII. — Analysis of the artesian-well water. 



[Numbers represent parts per million.] 



Physical characters normal 



Reaction alkaline 



Total solids 274.0 



Appearance on ignition little 



black- 

 ening 



Free or saline ammonia 0.074 



Organic or albuminoid ammonia 0.026 



Chlorine 4.8 



Nitrogen as nitrates nil 



Nitrogen as nitrites nil 



Silica (SiO.) 45.0 



Oxides of iron and aluminium trace 



Oxide of calcium (CaO) 6.0 



Oxide of magnesium (MgO) little 



Sulphuric anhydride (SO.-;) trace 



Total hardness : 10.7 



Permanent 10.7 



Bicarbonic acid radical (HCOs) 183.0 



Carbonic acid radical (COa) 15.0 



