An interesting and popular way of mounting and displaying various small individual objects was by selecting and positioning them into groups, usually geometric or patterned arrangements. Slides were made up using a wide variety of microscopic objects, including foraminifera, radiolaria, diatoms, insect and butterfly scales, seeds, sponge spicules, etc. One can only imagine the skill and patience required! Preparations were produced for both reflected (top lighting) and transmitted lighting. Photomicrographs of arrangements are from the slides shown. Note that some of these could just as well be considered as Exhibition slides, which are covered further on the "Exhibition" page.

Unusual arranged mount of Sponge Spicula by A.C. Cole, imaged using Darkfield lighting.


An epic Typen~Platte, 400 Diatoms selected and arranged by J. Moller, 1868. Imaged using Darkfield.

Arranged diatoms, imaged using Phase Contrast in transmitted light


Above, three arranged slides, all prepared using marine species by Amos Topping. Photomicrographs taken from the slides are shown below, imaged using incident light.

Arranged slide, Watson & Sons "Eggs of Butterflies, Etc." shown in detail.

Above, three arranged slides on opaque backgrounds for incident lighting, and below, the Watson & Sons "Group of Flowerseeds" shown in detail.

Above, selected & arranged Radiolarians from Barbadoes, Typen Platte by E. Thum, c. 1880s. Imaged using Darkfied techniques.

Above, an interesting arranged mount of Quartz Fragments from Volcanic Dust, John H. Day, early 1900s, imaged using crossed polarizing filters with oblique lighting methods.
Above, two beautiful examples of Arranged mounts using various Diatom species; imaged using Darkground lighting.  Below, a colourful 1" x 3" slide from Watson & Sons, titled "Arranged parts of Butterflies, Beetles, etc."

Arranged Diatoms for viewing in Incident (top) lighting, by A.C. Cole, c. 1870s.  Below, arranged "Anchors & Plates" from Sea Cucumber (Holothuroidea) by A. Topping, c. 1870s, imaged with Darkfield lighting.