here Shelley began his romantic tale of "The Assassins", a portion of
which is printed in his prose works. Want of money compelled them soon
to think of turning their steps homeward; and the back journey was
performed upon the Reuss and Rhine. They reached Gravesend, after a bad
passage, on the 13th of September. Mrs. Shelley's "History of a Six
Week's Tour" relates the details of this trip, which was of great
importance in forming Shelley's taste, and in supplying him with the
scenery of river, rock, and mountain, so splendidly utilized in
"Alastor".

The autumn was a period of more than usual money difficulty; but on the
6th of January, 1815, Sir Bysshe died, Percy became the next heir to the
baronetcy and the family estates, and an arrangement was made with his
father by right of which he received an allowance of 1000 pounds a year.
A portion of his income was immediately set apart for Harriet. The
winter was passed in London, where Shelley walked a hospital, in order,
it is said, to acquire some medical knowledge that might be of service
to the poor he visited. His own health at this period was very bad. A
physician whom he consulted pronounced that he was rapidly sinking under
pulmonary disease, and he suffered frequent attacks of acute pain. The
consumptive symptoms seem to have been so marked that for the next three
years he had no doubt that he was destined to an early death. In 1818,
however, all danger of phthisis passed away; and during the rest of his
short life he only suffered from spasms and violent pains in the side,
which baffled the physicians, but, though they caused him extreme
anguish, did not menace any vital organ. To the subject of his health it
will be necessary to return at a later period of this biography. For the
present it is enough to remember that his physical condition was such as
to justify his own expectation of death at no distant time. (See Letter
to Godwin in Shelley's Memorials, page 78.)