KEPOKT OF JOHN BOGAKT, 



ASSISTANT ENGINEER IN CHARGE. 



Park Commission, City of Brooklyn, 



Engineer's Office, January 1st, 1868. 

 C. C. Martin, Esq., 



.Engineer in Charge. 



Sir : I submit herewith a report of the progress of construction 

 and the amount of work done upon the park during the past year. 



THE TOPOGRAPHICAL SURVEY. 



This survey has been extended over the whole area of the park 

 west of Flatbush avenue, and is now in progress upon the ground 

 east of that avenue. The topographical maps have been completed 

 for the area surveyed, being 468 acres. The most elevated point 

 upon the park is at the summit of Lookout Hill, and has a height of 

 185/,; feet above mean high water. The lowest point is at the junc- 

 tion of Franklin avenue and the Coney Island road, and is 53/^ feet 

 above mean high water. This shows the extreme difference of ele- 

 vation of surface within the park to be 131, a feet. 



DEVELOPMENT OF THE PLAN". 



Very careful study has been, and is constantly, given to the prob- 

 lem of developing the adopted design in a way which will produce 

 the artistic effect required by the most economical arrangement and 

 distribution of material. The grades and lines of the drives, bridle- 

 roads and walks, the surfaces and inclinations of the slopes, meadows 

 and concourses, the heights of the fillings and the depths of the exca- 

 vations have been determined in accordance with this principle. Of 

 course, this study is made in advance of the operations of the con- 

 struction force. Working maps and profiles are prepared and esti- 

 mates of quantities made, and every means practicable, under the 

 peculiar conditions of landscape work, are taken to give to the work 

 on the park the benefit of the rules and experience of engineering 

 science. 



