Since the plague, if it reaches America at all, must come to us by sea, it may be of special interest to inquire concerning outbreaks of this disease on board ship. In making this inquiry we will confine ourselves to such cases as have occurred within the past two years. In March, 1897 (I have been unable to ascertain the exact date), the transport Dilwara left Bombay, bound for Southampton, with a regiment of English soldiers, together with their wives and children. On March 18th, while the vessel was in the Red Sea, a child died of the plague and was buried at sea. On arriving at Suez the persons who had been in immediate contact with the child were transferred to the Wells of Moses and properly disinfected. After this had been done, the vessel was allowed to pass through the Suez Canal in quarantine. No fresh case occurred, and the vessel arrived at Southampton April 6th. Here all articles which might possibly contain infection were disinfected, the passengers were allowed to go to their homes, and the troops were placed in barracks. No other cases resulted. On July 6, 1897, one of the crew of the Carthage, of the Peninsular and Oriental Company's line, was attacked with the plague. The ship was then in the Arabian Sea. Two days later the sick man, with two other members of the crew detailed to attend him, was landed at Aden. Six days later a second member of the crew was attacked with slight symptoms of the plague. This fact was reported when the vessel passed Malta. The Carthage had intended to stop at Marseilles, but, on account of the plague on board, continued its course to England. Both of these patients were isolated by being placed in a large boat hung at a height at the side of the vessel so as to avoid communication with others on the ship. When the vessel arrived at Plymouth the passengers were allowed to depart to their respective homes. The only precaution that was taken consisted in ascertaining the destination of each person, and informing the health authorities of the places to which these people were going. The Carthage had on board a steam disinfector, and everything that had been exposed to the infection was thoroughly disinfected. On arrival at the port of London the second patient was isolated until he recovered. No cases developed in England. On December 7, 1897, the Caledonia arrived at Plymouth, England, from Bombay, without touching at any Mediterranean port. While in the Red Sea two lascars developed symptoms of the plague. They were landed at Suez, and no further outbreak occurred. When the ship reached Plymouth one hundred and sixty passengers were landed, and their names and addresses forwarded to the local authorities of their respective destinations. After proper disinfection, the ship proceeded to London.