Dr. Flint commented in the _Smithsonian Annual Report_ for 1883 that the collection of cinchona barks was especially complete. It was comprised of specimens of nearly all the natural cinchona barks of South America and every known variety of the cultivated product from the British government plantations in India. In addition, there were specimens from Java, Ceylon, Mexico, and Jamaica. The Indian and Jamaican barks were accompanied by herbarium specimens of the leaf and flower (and, in some cases, the fruit) of each variety of tree from which the bark was obtained.[8] In an attempt to protect specimens liable to attack by insects, a small piece of blotting paper moistened with chloroform was inserted underneath the stopper in each bottle. Later on, bichloride of mercury was found to be a better insecticide. These early collections of the Section were brought into admirable condition and received compliments for their organization and completeness. In the _Smithsonian Annual Report_ for 1883, the collections were praised as "superior to any other in the United States and scarcely excelled by any in Europe." [Illustration: Figure 4.--DR. HENRY GUSTAV BEYER, the second honorary curator of the Section of Materia Medica (1884-1887). (_Photo courtesy of American Physiological Society._)] In spite of the apparent emphasis on the displaying of drugs, the first curator of the Section had envisioned that the exhibits eventually would embrace the entire field of the healing arts. In the _Smithsonian Annual Report_ for 1883, Dr. Flint noted that "in the establishment of a museum designed to illustrate man and his environment, it is proper that the materials and methods used for the prevention and cure of disease should have a place." However, his plans were temporarily interrupted when his first term as honorary curator ended in 1884. On June 4, 1884, Dr. Henry Gustav Beyer was detailed by the Department of the Navy to become the second honorary curator of the Section of Materia Medica. As a young man, Dr. Beyer (1850-1918) had come from Saxony, Germany, to the United States and, in due course, became a naturalized citizen. He was graduated from the Bellevue Hospital Medical College of New York City in 1876. Because of his interest in physiological experimental research, Dr. Beyer enrolled at the Johns Hopkins University, where he was awarded a Ph. D. degree in 1887. Unlike his predecessor, Dr. Beyer was primarily interested in carrying on research on the physiological action of certain drugs and in pharmacology. This was evident from the original scientific papers mentioned in the _Smithsonian Annual Reports_ and published by him during the period of his curatorship from 1884 to 1887. Despite the pressure of his postgraduate studies at Johns Hopkins University, Dr. Beyer helped in arranging and classifying the _materia medica_ collection without trying to extend materially the scope of the Section.