Contact: Diana Lutz
Washington University in St. Louis
Caption: Charles Robertson, a professor of biology and Greek at Blackburn College in Carlinville, Ill., 50 miles northeast of St. Louis, meticulously recorded the interactions of insects and flowering plants within a 10-mile radius of Carlinville at the turn of the century. The data he collected provides a baseline from which changes in plant-pollinator networks can be measured.
Credit: History of Macoupin County Illinois, published in 1911
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Related news release: Walking in the footsteps of 19th and 20th century naturalists