250 



Winter Cover Washes 



TABLE I. Indoor Trials. 



(8 



(9 



(10 



(11 

 (12 



Parts by weight 



including in each case 



water 100 



Lime 20 



Lime 



Resin , 



Lime 



Casein , 



Lime 



Starch , 



Lime , 



Dung 



Lime 



Filter-paper . 

 Caustic soda. 



Lime 



Filter- paper . 

 Caustic soda. 

 Starch 



20 



Remarks 

 Control wash 



Resin added during slaking 

 Resin dissolved in caustic 

 soda 



Casein added during slaking Softer than control 



Resulting coat 



About same as control 

 Soft and brittle 



Dung macerated first with 

 a little caustic soda 



Lime 



Newspaper ... 

 Caustic soda. 

 Starch 



Lime 



Washed pulp 



Lime 



Unwashed pulp 



Lime 



Washed pulp 



Starch 



Lime 



Unwashed pulp 

 Starch 



(13) Lime 20 



Boiled oil 4 



Starch 2 



Caustic soda. «4 



Starch treated with the 

 caustic soda and the 

 boiled oil stirred in and 

 whole mixture added to 

 the lime 



Hard but very brittle 

 Soft and thin 



Well matted coat firm but 

 uneven 



Not quite so firm as (G) but 

 thick and good 



About the same as (7) 



Moderately hard, not flaky 

 Firm 



Softer than (9) 



Irregular in thickness, firm 

 but fairly hard 



Not quite so firm as (11) 



Not enough boiled oil to 

 affect the coat 



TABLE II. Outdoor Trials. 



Figures indicate parts by weight and include in each case water 100 



Washed 

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