494 KANSAS CITY REVIEW OF SCIENCE. 



A portion of Hickory Street, in West Kansas, about half a mile long, was 

 paved under the Telford-MacAdam specifications, at a cost of seventy-eight cents 

 per square yard. It has had no repairs since completed, and has been carrying 

 a very large traffic with reasonably satisfactory results. The character of the 

 pavement on these two streets, was due, in the case of Walnut Street, to the 

 strong preference of a few active property-owners ; and in the case of Hickory 

 Street to the impracticability of getting a majority of the property-owners to agree 

 upon any better kind. 



A large amount of good macadam pavement might properly be put down on 

 certain streets, provided the city had a heavy steam roller to use in construction, 

 and, in addition, a well organized and equipped force to make repairs. Under 

 present circumstances I think it is bad policy to improve streets — especially busi- 

 ness streets like these — in this way. 



All the materials used and the execution of the work is under constant super- 

 vision — one, and frequently two, inspectors being assigned to each piece of work. 

 The whole work is under the immediate charge of the Superintendents of Construc- 

 tion, and care is taken to insure good workmanship and a substantial compliance 

 with the specifications throughout. 



The drainage system of the street surface is from the center each way to the 

 gutters, and along the gutters to sewer inlets at nearest street corners. 



The standard form for paved streets makes the pavement at the center of 

 the street level with the curbs, and thence sloping down on curved lines to eight 

 inches below this level at the curb line, excepting in the case of macadam streets, 

 which are designed to have twelve inches fall to the gutter. Considerable varia- 

 tion, however, is found to be necessary on account of the existence of single or 

 double lines of street railway tracks along the center of the roadway, and fre- 

 quently on account of streets where the old established grade varies from "level 

 across " to three feet higher on one side of the roadway then on the other. Some 

 modifications are advisable, too, in cases of steep longitudinal grades, but the gen- 

 eral purpose has been not to make the cross-slope greater than eight inches in 

 eighteen feet, and to make the gutter not less than six nor more than twelve 

 inches deep. 



Starting in tne spring of 1882 with seventy-eight miles of dirt streets out of 

 the total of ninety-three miles in the city, and the remaining fifteen miles of old 

 Telford-MacAdamized streets which included all of the business streets, the work 

 of paving done since then has been at follows : 



Miles paved. Cost. 



In 1882 0.98 $ 31.137 



In 1883 2.63 132-755 



In 1884 9.03 442.167 



Total . . ; 12.64 $606,059 



We have taken up five and two-thirds miles of old MacAdam pavements and 

 replaced them with stone or wood blocks. 



