For the account of the Aqueducts of Mexico and South America, I am indebted, in a great degree, to " Bradford's Antiquities of America" and " Ewbank's Hydraulics." F. B. Tower.

TABLE OF CONTENTS ------ Page.

------- Aqueducts of Ancient Rome,

------ Principal Aqueducts constructed by the Ancient Romans in other parts of Europe, Aqueducts of Modern Rome,

Principal Modern Aqueducts of Italy, France, etc., - - 30

... ........ Aqueducts of Mexico and the adjacent States, Aqueducts of South America, Fountains, -

----- History of the Progressive Measures for Supplying the City of Newadopted, ------- York with Water, Of Plans Proposed for furnishing the City with Water and of the Plan

... Sources of the Croton River,

FlowofWater in theCroton River, Capacity of the Fountain Reservoir, &c, 76

... ----- General Design of the Channel-way and Reservoirs, General Construction of the Aqueduct, Description of the Line of Aqueduct, - Appendix, - - - - - - - 125

Aqueduct of Spoleto, Italy, .... PLATES. - 3'^

Entrance Ventilator, .'.--- Sections of the Croton Aqueduct,

------ - - - - 84 & 86

------ Isometrical View of Culvert, 90 Tunnel and Gate Chamber at the head of the Aqueduct, - - 92

------ View above the Croton Dam, 95 Entablature over the entrance to the Aqueduct, - 96 View below the Croton Dam, Croton Aqueduct at Sing-Sing, Aqueduct Bridge at Sing-Sing, -

----- ----- - - - - 101 10:9.

Aqueduct Bridge for Road-way, Croton Aqueduct at Mill-River, ... - Croton Aqueduct at Jewell's Brook, Croton Aqueduct at Hastings, Croton Aqueduct at Yonkers, ... ----- - -