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The author makes a plea for the more general use of the microscope in the detection of adulteration of foods and drugs in the powdered form. Directions are given for the detection of the different starches and textile fibers; certain drugs such as lycopodium, ergot, etc., woody substances, leaves, barks, seeds, fruits, etc., of various kinds. The directions for mounting, preparing and examining are sufficiently elementary and full to satisfy every one who understands how to use the microscope. The book is well illustrated.
The Microscopical Examination of Foods and Drugs. A Practical Introduction to the Methods Adopted in the Microscopical Examination of Foods and Drugs, in the Entire, Crushed and Powdered States.. JAMA. 1903;XLI(22):1360. doi:10.1001/jama.1903.02490410050022