124 



STUDIES OF TREES 



3. Red oak 



{Quercus rubra) 



free from insects and disease 

 and will withstand the aver^ 

 age city conditions. 



Fastest grooving of the oaks; 

 very durable and highly resist- 

 ant to insects and disease; 



Fig. 93.— Street Trees. Norway Maples. 



4. Gingko 



{Gingko biloba) 



will grow in the average soil 

 of the city street. 



Hardy and absolutely free 

 from insects and disease; 

 suited for narrow streets, and 

 will permit of close planting. 



