This work is intended by the Author to from a practical handbook of reference upon all the chemical substances and processes in use among dyers and calico printers. While written grom a practical point of view, it takes a middle course between the generaties of high science and the technicalities of pure practice. Avoiding, on the one hand, the application of chemical principles which are not yet clearly perceived, and, on the other, a detailed description of processes which would be either unintelligible or unnecessary, the Author hope he has produced a book which may be profitably consulted by all who are either interested or practically engaged in printing and dyeing.

The claims which the Author has to be heard upon these subjects rest upon his familiar acquaintance with calico printing, acquired by nine years' service in a very extensive establishment, and upon a futher professional experience of three years, which has brought him into contact with nearly all styles of dyeing.