IN preparing this, the third edition of his Sugar Analysis, the writer has endeavored to cast his material in a form in which it would prove most readily available in the several branches of the sugar industry. With this aim in view the whole range of the subject the methods and means used in the analysis of sugar and in the analysis of the materials used in sugar production, have first been fully discussed, and then the specific analytical control of cane-sugar manufacture, of beet-sugar manufacture, and of refining, has been taken up for detailed consideration. In adopting this method of treatment a certain amount of repetition has been unavoidable. This however has, been reduced to a minimum and, it is believed, that-the greater convenience for practical use thus gained fully warrants the procedure. Although the International Com mission for Uniform Methods of Sugar Analysis adopted in 1897 — 2600 grams for 100 metric cubic centimeters, at 20° C., as the normal sugar weight, yet the American sugar industry, to a large extent, still retains as normal weight grams for 100 Mohr cubic centimeters.