Mrs Wilson's a throughgaun quean, and clears mair than a hunder a-year by the tannage.
The tannage is mellow, but not so much as is usual for upper leather.
For the tannage of sole leather in the drum by the cutiloid process, about 120 per cent.
The tannage lasts, therefore, 27 weeks, of which 18 weeks (two-thirds) are in layers.
Further disadvantages arise from the fact that the chrome tannage is an "empty" tannage.
The liquors may be warmed; this quickens the tannage and also leaches the sumach.
The tannage consists of oak bark and myrabs together with gambier.
The bath is exhausted by commencing the tannage of a succeeding pack.
Certain it is, however, that time renders the tannage more permanent.
Those leathers which are intended to remain on the shelves for many decades, should be in this tannage.