After finishing my studies in Scotland I visited London at the end of the autumn of 1864 for the purpose of appearing before the examining board of the Apothecaries’ Hall, when I found myself the guest of a brother-in-law, a popular non-conformist preacher in one of the populous suburbs of that city. During my stay with him I happened to hear one evening that an emigrant ship appointed to sail next day to Port Natal would most probably be detained by the sudden illness of the surgeon superintendent who had governmental charge. The vacancy was offered to me on condition that I should at once pass the official examination required of every medical man before he can be legally entrusted with the care of government emigrants. Early next morning, therefore, I appeared before Mr. Le Gros Clark, the appointed examiner, and successfully passing this extra examination joined on the same afternoon the good ship _Tugela_, Captain Stewart, bound with emigrants to Port Natal, South Africa. Sailing at once, I had for the first time an opportunity to look round at my fellow voyagers, who were chiefly composed of honest English yeomen with their families seeking to better their fortunes. The officers as time went on I found to be good men and true, the chief especially, whose sterling qualities, of which but a few years after he gave signal proof, I soon learned to appreciate. His memory is now all that remains; yet many of my readers and especially of my fellow passengers will have recognized in the noble hero of the _Northfleet_, the same Knowles of the _Tugela_, who on the fatal night of January 22d, 1873, when his ship lay at anchor between Folkestone and Dungeness, with 400 men, women and children on board, bound for Tasmania, was run into and sunk by a foreign steamer. I remember reading how chivalrously he endeavored to rescue the women and children, and how with his revolver he shot down those who in a cowardly manner tried to seize the boats. As said at the time, “he died at his post, sinking with his ship, having acted with a calmness, promptitude and decision that will cover his memory with honor.” The position of medical superintendent on board an emigrant ship I soon found was in one sense no sinecure, but I quickly learned the art of adjusting opposing social elements, and lulling the brewing storms, which, as there was neither sickness nor accident during our voyage, were the only cases (?) about which I was consulted.