4 REPORT OF THE 



sand lineal feel of walk were so repaired ; this was done under 

 contract with Mr. Thomas McCann, at such reasonable cost as 

 to occasion regret that the Commissioners were unable fco con- 

 tinue the work upon other portions <>t' the Park where similar 

 renewals of the surfaces of walks much used by the public, were 

 desirable. 



The prices paid by the Commissioners for this work were as 

 follows: For the repair of holes and broken surfaces, three 

 cents per square foot, superficial ; for resurfacing, three and 



one-half cents per square foot, superficial. 



The application of the material varied in thickness, from one 

 to five inches, according to the condition of the surface to be 

 worked over. The material used consisted of an artificially 

 prepared bitumen, the residuum of coal used in the manufac- 

 ture of gas, and now comprising a common article of commerce, 

 mixed with selected gravel, which the Contractor was permitted 

 to use from that found upon the Park. These ingredients make 

 up a desirable and economical substitute for the more expen- 

 sive concretes, of which asphalt and specially selected gravels 

 form the component parts. 



The surfaces repaired during the past summer, have been in 

 general use for live months, and give promise of durability. 

 Many of the walks of the Park, with a superstructure similar in 

 character, have been in use for ten years and over and have 

 required little or no expenditure for maintenance. 



For'a surface for roads and walks, with good foundations, 

 where considerable and frequent change of grade occur, it 

 furnishes an economical superstructure, being durable and 

 requiring but little expenditure for cleaning and repairs. 



During the summer, portions of the roadways which are 

 considerably used as thoroughfares for pleasure riding and 

 driving, were rendered more convenient for passage at night, by 

 the anl of lamps, which were placed along their line at suitable 

 intervals. The lamp used is of special construction, and is 



