This book explores some of Darwin's lesser known works in the light of today's scientific insights. This in an amazing read for avid readers of popular science and gives many new insights. Particularly in regards to barnacles and orchids. Darwin never stopped asking questions and he explored much the countryside around his home in great detail and published the results. He was much more prolific than is generally known and the works discussed in this book strengthen his arguments in his famous tomes. Fascinating, through and through.