REPORT OF THE SECRETARY. 61 



ROADWAYS AND WALKS. 



From the appropriation for reconstructing and repairing roadways and walks 

 4,770 linear feet, or nine-ten ths of a mile of road, was treated, from 10 to 45 

 feet wide, averaging slightly more than 20 feet, a total of 10,700 square yards. 

 The work varied from merely reshaping and supplying a top layer of stone to 

 furnishing the entire thickness of roadbed material, with considerable excavat- 

 ing and filling in some places where the existing grades were too steep. One 

 thousand six hundred square yards (the "concourse") were finished with 

 tarvia. The work cost from 22 cents to $1 per square yard, and the total 

 amount expended for roads was $7,220. 



During the year 9,260 linear feet, or 1| miles, of walks were laid or repaired. 

 They were from 6 to 16 feet wide, or an average width of about 9 feet, com- 

 prising in all 9,230 square yards. Of this about 6,500 square yards was old 

 macadam walk, the remainder gravel or dirt walks. A considerable amount of 

 excavation and filling had to be done in certain places in order to secure 

 reasonably uniform grades, and steps were constructed at points where the 

 grade had before been too steep. The walks are of stone macadam, the surface 

 treated with tarvia by the penetration method. The cost of laying them was 

 from 35 cents to 85 cents per square yard. A considerable amount of work 

 had to be done also in providing proper drainage. The total expenditure for 

 walks was $7,780. 



Respectfully submitted. 



Frank Baker, Superintendent. 



Dr. Charles D. Walcott, 



Secretary of the Smithsonian Institution. 



18308°— sm 1911 5 



