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Griendel, Johann Fransica von Acht.

Micrographia Nova:
oder Nei-Curieuse Beschreibung vershiedener Kleiner Koerper; welche vermittelst eines absonderlichen von Nurnbverg, Joh, Ziegeeers, 1687.

The German counterpart to Hooke's Micrographia (1655), being probably the first German work to illustrate objects as seen through the microscope. The book is significant in the development of the microscope, and Clay and Court's History of the Microscope (1932) contains references on 7 pages to it. On p.84 they state that Griendel's work contains " on p.7 an account with illustrations of a Microscope of Griendel's own design, which is interesting chielfy as being the first instrument in which there was an attempt made to improve the objective; for in this microscope the objective consists of two plano-convex lenses mounted with their curved surfaces facing one another. This construction was not copied by any other make and for the next hundred years the objective was universally made of a single lens, usually bi-convex." It seems that Dollond first re-introduced Griendel's objective. Griendel's new Microscope was a decided improvement on Hooke's and Leeuwenhoeck's instruments, as the object could be viewed at a greater distance from the lens, thereby greatly increasing the field of vision. The plates show various insects, including the earliest picture of the Scabies-parasite, plants and details of their construction, textile materials, etc. A Latin edition was published in the same year. Both editions are now among the rarest scientific books of the 17th century.

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