Sentence:  It may be asked why soak with warm water at all, on this theory? Why not soak with oil and tallow exclusively? The answer is because the oil, under such circumstances, will "slough" off, but if water not exceeding 110 degrees in heat be applied it will drive the oil from the surface and modify that greasy feeling and untidy appearance which attaches to <WSD>over stuffed</WSD> leather. <WSD>Over stuffed</WSD> leather can also be cured of its defects by being immersed in hot water to the extent above indicated. 
Meaning of the word marked with <WSD> tags:  Filled beyond capacity.