At over 206,000 words this is the second of the three large books for my August scientific reading marathon. I chose it in preference to The Origin of Species (first published 1859) for several reasons, including the fact that it is a lot more readable, but mainly because in this you can see Darwin slowly edging towards the theory that would make him famous. This is especially true of the second edition (1845, the first edition was in 1839, twenty years before his more famous work), the text of which is used for this book as Darwin altered sections in light of his research and developing thoughts. Another reason is that I love the work of Robert Gibbings who illustrated this Heritage Press volume. Although called a journal which implies a diary like approach, and yes most of the entries do have the date at their start, it is not chronological. We do bounce around a bit for a few years as The Beagle was on a nearly five year surveying mission so tends to revisit places several times and Darwin to make things clearer and avoid the obvious repetition has entries that may be months or years apart but which are put together because geographically they make more sense that way. It actually took me a while to realise what was going on and it was only when I stepped back a couple of pages to refresh my memory that I spotted that the entry there was two years after the one I was reading.
Throughout the text you can see Darwin edging towards evolution and the concept of gradual change in species. He also references many species which have the dubious distinction of being ‘described by Darwin but now extinct’ including a type of cattle in South America and on the Falkland Islands a species of wolf which he describes as a fox when he sees it and noted it’s decline.
Their numbers have rapidly decreased; they are already banished from that half of the island which lies to the eastward of the neck of land between St Salvador Bay and Berkeley Sound. Within a very few years after these islands shall have become regularly settled, in all probability this fox will be classed with the dodo, as an animal which has perished from the face of the Earth.
This may well be the earliest documented use of the dodo as a reference point for extinction of a species.
When you think of Darwin’s voyage then most people automatically think about the Galapagos Islands but in truth he spent very little time there arriving on 15th September and on his way to Tahiti by 20th October 1835. Just over a month out of a almost five year voyage and they take up in this edition twenty seven pages out of almost five hundred despite having more illustrations than most other sections. What we do get is a basic description of what have become known as Darwin’s finches as he realises that the bill shapes on different islands vary dramatically in order to make best use of the food supplies found there. Despite the giant tortoises being the most famous residents and symbol of the archipelago it was the finches that really drove his realisation of what became known as evolution. He is also one of the first people to accurately describe the marine iguanas found exclusive on these islands and notice their diet of seaweed rather then the belief up until then that they were after fish.
When reading the book one thing you notice is just how much time Darwin isn’t on board The Beagle, he goes off on long expeditions inland sometimes for weeks at a time whilst Captain Fitzroy is engaged on his duties creating charts for the admiralty. You therefore get long passages where he either makes circuits when the ship will be in one place for a period of time or he arranges to meet the vessel at a specified port further along the coast. The observations he makes away from the coastal areas add greatly to his geological studies and give fascinating diversions to life on board ship, but I suspect they are also inspired by his desire to be on solid ground due to the really bad seasickness he was prone to, which almost made him leave the expedition within a few weeks of the start. Science was greatly enhanced by his decision to keep going regardless but it was so close to being abandoned before he could make any of his discoveries.
Towards the end of the book the Beagle goes to the Keeling Islands and it is here that Darwin comes up with a theory for how coral islands and reefs are formed and ultimately writes another book on the subject. This is one of the few passages where the text becomes difficult to follow as he references maps from the other book without the reader of this volume having access to them, but there is enough for you to understand the process proposed. Other than this section the book is extremely readable even in this full form. Most versions printed nowadays, including the Penguin Classics edition are heavily edited and have more than 25% removed coming out at less than 150,000 words, which is still a substantial work but I would rather read a complete edition.