Publications of the United States National Museum The scholarly publications of the United States National Museum include twoseries, Proceedings of the United States National Museum and United States National Museum Bulletin. In these series are published original articles and monographs dealing with the collections and work of the Museum and setting forth newly acquired facts in the fields of Anthropology, Biology, Geology, History, and Technology. Copies of each publication are distributed to libraries and scientific organizations and to specialists and others interested in the different subjects. The Proceedings, begun in 1878, are intended for the publication, in separate form, of shorter papers. These are gathered in volumes, octavo in size, with the publication date of each paper recorded in the table of contents of the volume. In the Bulletin series, the first of which was issued in 1875, appear longer, separate publications consisting of monographs (occasionally in several parts) and volumes in which are collected works on related subjects. Bulletins are either octavo or quarto in size, depending on the needs of the presentation. Since 1902 papers relating to the botanical collections of the Museum have been published in the Bulletin series under the heading Contributions from the United States National Herbarium. The present collection of Contributions from the Museum of History and Technology, Papers 19-3c, comprises Bulletin 228. FRANK A. TAYLOR Director, United States National Museum IV In acknowledgment of the many contributions of the Burndy Library to the advancement and encouragement of studies of the history of science and technology, these papers are dedicated to Bern Dibner |