Describes his travels since leaving Norwich on 30 April: stayed with Thomas Forster at Walthamstow and Edward Forster at Hale End, [both in Essex]; gave course of 10 lectures at the London Institution; saw the Coke family and Dr [Martin] Davy of Caius College, [Cambridge]; arrived in Bristol on 12 June but inflammation in his lungs recurred after his first three lectures, following treatment with James's powder, bleeding, and starvation resumed and completed lectures to a "brilliant & numerous" audience; staying in a cottage till end of September to regain his health. Finished third volume of his "[English] Flora". Heat in London prevented him from seeing Roscoe's son, Thomas, and the only exhibition or sight he saw was the King in the drawing room.