On the 6th of September 1808, when His Majesty’s Mission to the court of _Teheran_ was still at _Bombay_, the Envoy extraordinary, Sir HARFORD JONES, received dispatches from the Governor-general at _Calcutta_, which determined him to proceed immediately to Persia. The establishment of the mission had been changed since our arrival in India; Major L. F. SMITH, who left England as public Secretary, on landing at this settlement proceeded to BENGAL; and the duties of Secretary of the Legation were annexed to those, which, as private secretary to the Envoy, I had originally discharged. The suite was augmented at _Bombay_ by Mr. THOMAS HENRY SHERIDAN, and Captain JAMES SUTHERLAND, severally of the civil and military establishments of that presidency, by Cornet HENRY WILLOCK, of the _Madras_ cavalry, commander of the body guard; and was subsequently joined by Lieutenant BLACKER, of the _Madras_ cavalry, and Mr. CAMPBELL, surgeon to the mission. Besides three European and some Indian servants, the Envoy carried washermen and tailors, and some artificers, as carpenters, blacksmiths, and locksmiths. On the 12th Sept. Sir HARFORD JONES, accompanied by Mr. SHERIDAN and myself, embarked on board his Majesty’s frigate _Nereide_, Captain CORBETT; Capt. SUTHERLAND and Mr. WILLOCK went in the _Sapphire_, Capt. DAVIS: and the H. C. cruizer _Sylph_ carried the Persian secretary, &c. The Governor of _Bombay_ drew out the troops of the garrison to salute the Envoy on his embarkation: they formed a lane from the government-house to the entrance of the dock-yard; and as He passed the troops presented arms, and the music played “God save the King.” A salute of fifteen guns was fired on his quitting the shore, and was answered by another from the frigate; a ceremony which always excites a powerful feeling of respect in the minds of the natives. In the afternoon of the 12th, the squadron left the harbour of _Bombay_: on the 13th, the _Nereide_ had out-stripped the _Sapphire_, and had lost sight of the _Sylph_. The winds were variable and squally: the thermometer in the cabin stood at 82°. About ten o’clock, on the morning of the 14th. we made the land of _Diu_; we stood close in shore, and tacked at twelve o’clock; the Portuguese colours were flying on the fort. The thermometer was this day 80°. 15th. calms. The land of the _Guzerat_ is extremely low. _Diu_ Point is studded with towns and pagodas. 16th. we made but little way; tacked off and on shore, and distinguished a variety of buildings and towns on the coast. The largest place, which we marked in our progress, was _Pour-bundar_. The coast itself continued flat, with scarcely an inequality.