"The appellants contend that the word 'industrial' in the Constitution does not cover so wide a field, that it is restricted to work connected directly or indirectly with production and manufacture. 'Industrial dispute' was not, when the Constitution was framed, a technical or legal expression. It had not then, nor has it now, any acquired meaning. It meant just what the two English words in their ordinary meaning conveyed to ordinary persons, and the meaning of these words seems to be now much what it was then. Taking first the authority of dictionaries: Webster's International Dictionary, in the 1892 edition, defines 'industrial' as follows: - 'Consisting in industry; pertaining to industry, or the acts and products of industry; concerning those employed in labour, especially in manual labour, and their wages, duties, and rights.' The Standard Dictionary (1893) defines 'industry': - 'Labour employed in production, especially in manufacturing; useful labour in general; also, labourers as a body; as organized industry. Any single branch of productive activity; the labour and capital employed in a trade or department of business; as, the iron industry; the farming industry; American industries.' Murray's New English Dictionary of later date and high authority gives many uses of the word, but that bearing on the question in controversy is: - 'Industry; systematic work or labour; habitual employment in some useful work, now especially in the productive arts or manufactures'. The dictionaries apparently agree in recognizing both uses of the words 'industry' and 'industrial' as referring to labour in the production and manufacture of goods, and as referring to labour of any kind."