of the oak, ash, silver maple, elm and other trees, spraying 
with whale oil soap, when the young are hatching out in 
the spring, is a safe and effective remedy. Winter spray- 
ing with oil solutions gives excellent results, but should 
be attempted only by experts, because of the danger of 
injuring the trees. Lime and sulphur, the familiar spray 
of the farmer, can seldom be used on street trees, owing 
to the danger of defacing adjacent property or the clothing 
of passersby.* ' 
In pursuance of the authority conferred upon them by 
law for the care of the trees and their protection against 
injury the Commissioners have adopted the following: 
REGULATIONS 
For the Protection of Street Trees. 
1. No tree shall be pruned, sprayed, planted in, cut 
down or removed from any highway in the City of Phila- 
delphia without authority from the Commissioners of 
Fairmount Park. 
2. No person shall climb uj.on, cut, break, bark or 
otherwise injure or disturb any tree, tree-guard or support 
thereof on any highway in the City without a iithority from 
said Commissioners. 
3. No person shall fasten any horse or other animal to 
any tree, tree-guard or support thereof, or leave any ani- 
mal fastened or unfastened within reach of any tree, tree- 
guard or support thereof on any highway in the City. 
4. No person shall attach any guy-rope, cable, wire or 
*Much cognate and interesting information will be found in 
the 24th Annual Eeport of the City Parks Association of Phila- 
delphia (1912), and it is recommended that it be r^ad in con- 
junction with this report. 
