It is important that the thermal expansion of the two materials which are thus incorporated should be nearly alike, as otherwise warping of the finished sheet is liable to result.
The best notion of the process of warping may be gained by sailing up the Trent from the Humber to Gainsborough.
high; the distortion has evidently taken place through the use of unseasoned timber and consequent warping of the woodwork.
The chief processes for the improvement of soils which may be discussed here are: liming, claying and marling, warping, paring and burning, and green manuring.
This epoch of great deformation and warping marks the transition from the Tertiary to the Quaternary.