14. Meanings of 'bed', 'seam' and 'vein'.

In a legal document, the context may show that the word 'bed' or 'seam', instead of bearing its normal meaning of a layer or member of a series of stratified rocks, is used to designate a deposit consisting of two or more strata of mineral separated by thin layers of other rock, for example shale, as distinguished from any one layer of mineral. In such a case 'vein' is sometimes applied to each of the layers of minerals comprised in the seam