The anatomy of the Roman snail is explained in one of the 39 wallcharts by Paul Pfurtscheller (1855-19), most of them published in 1926. The quince flower being pollinated by a bee comes from a series on plant systematics created by Arnold Dodel-Port and his wife Carolina between 1878 and 1883.
The chart depicting the ergot fungus was based on research by Leopold Kny (1841-1916) and forms part of a series issued between 1874 and 1911, along with a 554-page explanatory textbook. So precise were Kny's drawings that they were still being used for educational purposes more than a century after the project began.
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