Much of biodiversity is discovered in museum collections, sometimes years after the specimen has been collected. Ploughing through expedition notes and logs is then required and therefore having a way to summarize the contents of a large text corpus can be very interesting. In this example, I will graphically summarize “On the Origin of Species” by Charles Darwin (it seemed a suitable choice) to demonstrate this technique.
![](http://viz.smultron.org/wp-content/uploads/2020/10/origin_of_species-1-1024x546.png)