"The sanitarian cannot hesitate to advocate, for general reasons if not especially for yellow fever, the cleansing of the harbour, the cessation of daily additions to it of large masses of filth, and the replenishment of it by constant currents of pure water. To accomplish the last, it has been much insisted on, in the United States, as well as in Cuba, that canals should be dug. Out of Cuba it ought to be better understood that Havana is by no means deficient in highly educated, skilful, practical engineers, who are fully alive to the sanitary interests of the city, and to the merits of this especial subject. Among these, Colonel Albear stands pre-eminent, and in September, 1879, he delivered before the Academy of Sciences an extremely able address on this subject, which is so full of instruction, on other local conditions also of interest to the sanitarian, that this address has been translated and is presented, as a most interesting part of this report. Colonel Albear seems to have conclusively demonstrated the impracticability of these proposed canals; and my own conviction is that if practicable they could not possibly place the small harbour of Havana in as favourable sanitary conditions as are by nature the large harbour of Matanzas and of Cienfuegos, where yellow fever none the less prevails." DRAINAGE "In Cuban cities, generally, good drainage is not found except in such comparatively inextensive parts where nature required little or no assistance. Even in Havana, the oldest and wealthiest city, the visitor is often astounded, especially in the rainy season, by impassable mud-holes, and green, slimy, stagnant pools in the streets and in the backyards. This condition was found even in the Pueblo Nuevo ward, which is located so admirably for good drainage that little labour would be required to make it perfect.