Note 200 — A CYCLOPÆDIA OF PRACTICAL RECEIPTS, PROCESSES, AND COLLATERAL INFORMATION (continued 16)
Reading edition
In Scotland, flour-paste soured by keeping is often substituted for part of the treacle in the common blackings; with the effect, however, of greatly impairing their polishing qualities, and causing the leather to rapidly become stiff and to crack. Further, such blacking will not keep, often growing mouldy and hard in two or three weeks.