REPORT OF JOHN BOGrAKT, 



ASSISTANT ENGINEER IN CHARGE. 



Park Commission - , City of Brooklyn, ) 

 Engineer's Office, January 1st, L868. ) 



j C. C. Martin, Esq., 



Engim i r in < 'harge. 



Sir: — I Bubnait herewith a report of the progress of const ruction 

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



THE TOPOGRAPICAL SURVEY. 



This survey lias been extended over the whole area of the Park west 

 of Flat hush 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 t 6 q feet 

 above mean high water. The lowest point is at the junction of Frank- 

 lin Avenue and the Coney Island Road, and is 53y„ feet above mean 

 high water. This shows the extreme difference of elevation of surface 

 within the Park to be 131 T 9 5 feet. 



DEVELOPMENT OF THE PLAN. 



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

 of developing the adopted design in a way which will produce the ar- 

 tistic effect required by the most economical arrangement and distribu- 

 tion 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 excava- 

 tions have been determined in accordance with this principle. Of course, 

 this study is made in advance of the operations of the construction 

 force. Working maps and profiles are prepared and estimates of quanti- 

 ties 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. 



Tabular statements of the work already done, accompanying this 

 report, will, to a certain extent, suggest the breadth and variety of the 

 subjects necessarily occupying the constant attention of the Engineers ; 



