during this part of his tour some account has been given by Mr. Hope in
the Transactions of the Entomological Society and in the eighteenth
volume of our own Transactions.

"His collection of plants was also largely increased on this remarkable
journey, which was followed by a still more perilous expedition,
commenced in February of the following year, from Assam through the
Burmese dominions to Ava, and down the Irrawadi to Rangoon, in the course
of which he was reported to have been assassinated. The hardships
through which he passed during the journey and his excessive application
produced, soon after his arrival in Calcutta, a severe attack of fever:
on his recovery from which he was appointed Surgeon to the Embassy to
Bootan, then about to depart under the charge of the late Major
Pemberton. He took this opportunity of revisiting the Khasiya Hills,
among which he formed a most extensive collection; and having joined
Major Pemberton at Goalpara, traversed with him above 400 miles of the
Bootan country, from which he returned to Calcutta about the end of June
1839. In November of the same year he joined the army of the Indus in a
scientific capacity, and penetrated, after the subjugation of Cabool,
beyond the Hindoo Khoosh into Khorassan, from whence, as well as from
Affghanistan, he brought collections of great value and extent. During
these arduous journeys his health had several times suffered most
severely, and he was more than once reduced by fever to a state of
extreme exhaustion; but up to this time the strength of his constitution
enabled him to triumph over the attacks of disease, and the energy of his
mind was so great, that the first days of convalescence found him again
as actively employed as ever.

"On his return to Calcutta in August 1841, after visiting Simla and the
Nerbudda, he was appointed to the medical duties at Malacca: but Dr.