The twentieth volume in a 29-volume set which contain all Charles Darwin's published works. Darwin was one of the most influential figures of the 19th century. His work remains a central subject of study in the history of ideas, the history of science, zoology, botany, geology and evolution.
Basic understanding of genetics came more than a generation after Darwin died. Here he describes numerous variations of inheritance and struggles to organize them into one system. Knowing how that came out, his thought process shows how brilliant he was.
A continuation of volume 1 it still has the same scientific descriptions but related to a different set of animals and groups of species along with the plants and crops we are most familiar with. Very in-depth but my copy being for the kindle was lacking images which would have improved and developed understanding immensely. Still a very worthwhile piece of reading, especially if you enjoy reading about evolution or have an interest in different plants and animals.