To: Brumar89 who wrote (1427 ) 6/13/2006 2:35:44 PM From: TigerPaw Respond to of 69300 If he was working on evolutionary theory in some manner, it's amazing that he didn't publish anything about it for decades Then it is amazing. Darwin's ideas developed rapidly from the return in 1836 of the Voyage of the Beagle. By December 1838 he had developed the principles of his theory. At that time similar ideas brought others disgrace and association with the revolutionary mob. He was conscious of the need to answer all likely objections before publishing. While he continued with research, he had an immense amount of work in hand analysing and publishing findings from the Beagle expedition, and was repeatedly delayed by illness. That book was a big deal, and Darwin wanted to be darn sure he got it right before publishing. As it was, he still had no way to explain genetics or the implications of plate tectonics as neither of these fields were known at the time. Darwin wrote letters and essays to other scientists on the idea, but tried to avoid getting the clerics on his case. They were at the time even more powerful than they are now. In the mean time he published several books on supporting evidence, without tipping his hand as to what the evidence supported. Mostly it was long lists of factoids such as how fast earthworms would bury rocks and the collections made on the Beagle voyage. This way when he did publish Origin of Species he had the supporting evidence at hand, and wasn't immediately hit with a bunch of "What abouts" where he had no data. Most of all, Darwin appeared to be a shy person, living in the countryside and communicating to all but his immediate family by letters. He seemed to want to avoid the public attention that publication would cause. The geologist Charles Lyell forced the issue by making public some of Darwin's letters on natural selection along with Wallaces as a comparison. Then the cat was out of the bag, and Darwin went ahead and published his book a year later. TP