Viewing page 1 of 4

This transcription has been completed. Contact us with corrections.

^[[File with Dr. Flint Rep 1855-56]][[?]]
^[[R19 For Ann Rep [[strikethrough]]95[[/strikethrough]] 96]][[?]]
^[[Brevie]][[?]]

The following description and illustrations of apparatus for public exhibition of microscopic objects is presented as being pertinent to the subject of the installation of museum exhibits. The apparatus described is believed to be the first practically successful attempt to make a series of such objects available for examination by the public, without extravagant expense of extreme watchfulness.

The first appliance for this purpose, devised by the writer, was an accessory to the ordinary microscope stand. It consisted of a circular plate of pasteboard made to revolve upon a pivot attached to the stage, the plate carrying a series of objects mounted upon small disks or small squares of glass. ([[strikethrough]]See illustration.[[/strikethrough]] ^[[Plate 1]]). This accessory was made in 1885, and described in the American Mon [[?]] Monthly Microscopical Journal in November of the year. ^[[*]]

^[[*]](Note) A slightly modified form of this accessory is described and figured in the Report of the Secretary of Agriculture for 1891 as a "new and improved form" of "revolving stage for viewing microscopic sections", by Thomas Taylor, M.D.

This arrangement was only suitable for class use under the immediate supervision of the instructor. For public use the principle of the rotary stage has been developed by enlarging the circular plate, enclosing it securely in a box with a glass top upon which the microscope is fastened, giving a rotary motion to the stage by means of a fraction roller operated by a milled head on the outside of the box, and a to and fro movement affected by a rack and pinion controlled by another milled head in close proximity to the [[strikethrough]]other[[/strikethrough]] ^[[former]]. By a combination of the two movements any por-