The most common presenting complaint of DID is depression, with headaches being a common neurological symptom. Co-morbid disorders can include substance abuse, eating disorders, and anxiety. Things like posttraumatic stress disorder (PTSD) and personality disorders are introjected behaviors only.
Fourteen of them were the notebooks Darwin used on his shore excursions during the voyage of the Beagle (1831-1836). This is the first complete edition of these important notebooks, thirty years in the making. The notebooks were also published in 2009 as a book: Gordon Chancellor and John van Wyhe eds.
The account was completed and published as a four volume set in May 1839 as the Narrative of the Surveying Voyages of His Majesty's Ships Adventure and Beagle. Volume one covers the first voyage under Commander Phillip Parker King, volume two is FitzRoy's account of the second voyage.