September 1834. After the voyage ended on 2 October 1836, he quickly established himself as an eminent geologist, at the same time secretly beginning speculations on transmutation as he conceived of his theory. On 20 September 1837, he suffered "an uncomfortable palpitation of the heart" and as "strongly" advised by his doctors, left for a month of recuperation in the countryside. That October he wrote, "Of late anything which flurries me completely knocks me up afterwards, and brings on a violent palpitation of the heart." In the spring of 1838 he was overworked, worried and suffering stomach upsets and headaches which caused him to be unable to work for days on end. These intensified and heart troubles returned, so in June he went "geologising" in Scotland and felt fully recuperated. Later that year however, bouts of illness returned—a pattern which would continue. He married Emma Wedgwood on 29 January 1839, and in December of that year as Emma's first pregnancy progressed, he fell ill and accomplished little during the following year. For over forty years Darwin suffered intermittently from various combinations of symptoms such as: malaise, vertigo, dizziness, muscle spasms and tremors, vomiting, cramps and colics, bloating and nocturnal intestinal gas, headaches, alterations of vision, severe tiredness, nervous exhaustion, dyspnea, skin problems such as blisters all over the scalp and eczema, crying, anxiety, sensation of impending death and loss of consciousness, fainting, tachycardia, insomnia, tinnitus, and depression. Water treatment Darwin had no success with conventional treatments. In 1849, after about four months of incessant vomiting he took up the recommendation of his friend Captain Sulivan and cousin Fox to try the water therapy regimen at Dr James Gully's Water Cure Establishment at Malvern. He read Gully's book, which provided case histories and had a price list at the back. Darwin rented a villa at Malvern for his family and started a two-month trial of the treatment on 10 March. Gully agreed with Darwin's self-diagnosis of nervous dyspepsia and set him a routine including being heated by a spirit lamp until dripping with perspiration, then vigorous rubbing with cold wet towels and cold foot baths, a strict diet, and walks. Darwin enjoyed the attention and the demanding regime which left him no time to feel guilty about not working. His health improved rapidly, and he felt that the water cure was "no quackery". He had no faith in the homeopathic medicines