Oh, in thinking. I personally think this programme might have missed one crucial point here, that contradicts its conclusions...
"In conclusion, it appears to me that nothing can be more improving to a young naturalist, than a journey in distant countries. It both sharpens, and partly allays that want and craving, which, as Sir J. Herschel remarks, a man experiences although every corporeal sense be fully satisfied. The excitement from the novelty of objects, and the chance of success, stimulate him to increased activity. Moreover, as a number of isolated facts soon become uninteresting, the habit of comparison leads to generalization. On the other hand, as the traveller stays but a short time in each place, his descriptions must generally consist of mere sketches, instead of detailed observations. Hence arises, as I have found to my cost, a constant tendency to fill up the wide gaps of knowledge, by inaccurate and superficial hypotheses."
From this, I suggest his insight into Evolution happened after New Zealand and Australia. Merely eighteen days in Sydney, and much of it travelling by horse drawn carriage and walking does not leave an enduring legacy. Is this programme an example of
Austrocentricism (my current word of the month ?)