Note 4 — Chapter XLV · THE LOWER AMUR.
Reading edition
Mr. Ravenstein, in his admirable and generally accurate work (page 187), gives the Amur below the Dondon a breadth in one bed of six miles, and further on a width of 15 miles, including the islands; but I have been unable to confirm these figures from either the chart of the captain of the steamer, or from a well-executed Russian survey of the Amur river at the India Office, which was politely shown me by Mr. Trelawney Saunders.