About T.H. Huxley himself we have a more complete record. As a young apprentice to a physician, he was taken to watch a post-mortem dissection. Afterwards he sank into a 'deep lethargy' and though he ascribed this to dissection poisoning, Cyril Bibby and others have suggested that emotional shock precipitated a clinical depression. The next episode we know of in his life was on the third voyage of HMS "Rattlesnake" in 1848. This voyage was mostly to New Guinea and the NE Australian coast, including the Great Barrier Reef, which is a kind of wonderland for any zoologist, especially a young man hoping to make his career. The story is clear from the diary Huxley kept: p112 'little interest in the Barrier Reef'; p116 'two entries in seven weeks'; p117 '3 months passed and no journal' p124 'the black months of struggle and depression'. For him to pass up such a golden opportunity speaks of his state of mind.