Excerpts from the Letter of Transmittal: I have the honor to submit herewith the report of the investigations made by this Bureau on the Sugar Industry of the United States during the year 1884. The report consists of an Introduction and four parts, viz, Cane Sugar, Beet Sugar, Sorghum Sugar, and Maple Sugar. In Part II is incorporated the valuable report of Mr. G. L. Spencer on late improvements in machinery and methods for the manufacture of beet sugar. During the past year, instead of a merely local study of sugar chemistry in the laboratory here, stations have been established in various parts of the country. While this method of investigation requires more labor and is more expensive than that of local work, it is believed that it is far more practical, and the results it gives of much greater value.