Excerpt from Catalogue of the Microscopical Section of the United States Army Medical Museum, 1867: Prepared Under the Direction of the Surgeon General, U. S. Army

Note - These preparations, with the exception of three hundred and sixty opaque injections by Professor Hyrtl, of Vienna, and a few others, are mounted on slips of glass three inches long by one wide. Each slide is labelled with the name of the object, the menstruum in which it is mounted, the date of preparation, and the Museum and Catalogue numbers of the specimen. The large majority of the specimens have been prepared in the Microscopical Department of the Museum - the greater part by Acting Assistant Surgeon J. C. W. Kennon, U. S. Army, the remainder by Assistant Surgeon Edward Curtis, U. S. Army, and Hospital Steward E. M. Schaeffer, U. S. Army. Where a specimen has not been prepared in the Museum, the name of the preparer is appended to the description.

The preparations of Professor Hyrtl consist of opaque fine injections in various colors, to Show the arrangement of the capillaries in the different structures of the body. They are mounted dry in small Slips of wood, having a black background, and are to be viewed by re¿ected light.

In the following Catalogue, the range of objectives that may be advantageously used with each preparation is given. By low powers is meant Object glasses below an by moderate those between an 18 - 0 and a by high those from a i upwards.

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