Notwithstanding the fact that yellow fever has been unusually prevalent on the islands of the Spanish Main, necessitating stricter precautions at our ports of entry, the Saratoga, of the Ward Line Steamship Company, arrived in New York July 8 from Havana after a fast passage of a little more than three days.
No fact is clearer than that the extreme limit of the period of incubation of yellow fever is only reached at the end of the fifth day.
Some of the passengers of the Saratoga had provided themselves with certificates from Dr. Burgess at Havana, showing that they had been "acclimatized," that is to say, that they had had yellow fever, and therefore were not likely to transmit the disease, or to acquire it after landing. Others, however, were not so fortunate, and the Health Officer, Dr. Doty, very properly directed that those not provided with proper certificates, coming