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George Macintosh and Co, dyers, also said to be the first chemical works in Glasgow
1825 After his father's death, Charles Macintosh took charge of George Macintosh and Co. Having had ample experience of Mr. John King's (1789-1875) business ability, Charles invited him to join the firm (becoming a partner at the same time as George, the elder of his own sons).
1843 Charles Macintosh died
c.1845 Charles' son George left the business, severing the Macintosh connection with the company.
1848 George Macintosh died. John King took over the business and that of the Hurlet and Campsie Alum Co.