A Daily History of Holes, Dots, Lines, Science, History, Math, Physics, Art, the Unintentional Absurd, Architecture, Maps, Data Visualization, Blank and Missing Things, and so on. |1.6 million words, 7500 images, 4.9 million hits| Press & appearances in The Times, Le Figaro, Mensa, The Economist, The Guardian, Discovery News, Slate, Le Monde, Sci American Blogs, Le Pont, and many other places… 5000+ total posts since 2008.

Antique Microscopy of Holes

JF Ptak Science Books  Quick Post

This is a simple posting of some images found at the Manchester Microscopical Society website–beautiful 19th century preparations in which the circular specimen or stain happened to appeal to a sense of design, and which also fits snuggle into my long series on The History of Holes .  

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Source for all images: Manchester Microscopical Society

Micrscope slide e

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