EIGHTEENTH ANNUAL REPORT 91 



Breeding Cages, we erected a total of 2,026 feet of guard rails 

 or guard wires, set on steel posts in concrete foundations, at a 

 total cost of $700. 



New Puma Cage. — A puma cage was built of steel T-frames 

 and heavy electrically-welded wire of great strength, after a 

 design made by this Department. It is a very satisfactory struc- 

 ture, and cost $820 to build. 



Surfacing Walks. — During the year we surfaced with tar- 

 macadam the following walks : Service Road to Antelope House, 

 Lydig Arch to Mt. Sheep Hill, Antelope House to Pheasant 

 Aviary, and in front of the Wolf and Fox Dens; altogether, 

 28,000 square feet, at a total cost of $1,291.00. 



Miscella7ieous Ground Improvement Work. — A glass parti- 

 tion was erected in front of the apes cages, in the Primate House, 

 at a cost of $175.00. 



An outdoor concrete bathing pool was constructed for the 

 Rhinoceroses at a cost of $350.00. 



Six feed and sixteen water troughs were built of concrete, 

 at a total cost of $275.00. 



Nine concrete benches cost $150. This, however, does not 

 represent the cost of the concrete benches alone, but the cost of 

 the building of the forms and of changes made in them during 

 the experiments made with a view to have them perfect. Now 

 that the forms are on hand, we estimate the cost of the benches 

 at about $6.50 each. 



MAINTENANCE WORK. 



The disposal of refuse, ashes and litter; the distribution of 

 food supplies, and the general care of trees, lawns, walks, and 

 buildings, was similar to that of previous years, with the excep- 

 tion that the amount of work was proportionately increased by 

 the new installations, and by the fact that many of the older 

 buildings, cages, etc., need more repairs than previously. 



The repairs to the roofs of the Aquatic Bird House, and the 

 Reptile House compelled the expenditure of much more material 

 and labor than has been expended for repairs in any year here- 

 tofore. At the Reptile House we had to remove all of the slate 

 on the north slope, and reflash and reslate the entire roof. In 

 some cases we even had to furnish new roof boarding. In the 

 Lion House, besides doing a great deal of work on the roof, and 



