I made a comment about Twain's claim of suffering from cholera on the page associated with chapter 44. Cholera is a rather dubious claim, dysentery perhaps?
The Innocents Abroad - Chapter 45
Of great interest to me, in this chapter, is the dress and behaviour of the tourists, especially their self-justified vandalism. Twain is amused by the former and offended by the later. He remarks on a somewhat related behaviour of the doctor. Once knowledge that a doctor was present in one of the Syrian villages they'd stopped in, the people flocked to him "... and upon his face was written the unquestioning faith that nothing on earth could prevent the patient from getting well now."
The chapter also notes the loss of another childhood fantasy, Arabs and their horses. "Look at poor cropped and dilapidated "Baalbec," and weep for the sentiment that has been wasted upon the Selims of romance!"