276 AN INQUIRY INTO THE CAUSES OF THE DEATH OF 



Tree No. 25. Catkins on upper part, but no leaves. 



,, ,, 28. Catkins and very small leaves on upper branches. 



,, ,, 30. Dead from above downwards 10 feet. 



>> •• 36. Catkins, but no leaves. 



Those branches without leaves were probably attacked last 

 autumn 



The intermediate numbers indicate trees which were totally 



dead. 



Fig. 2. Tree No. 2. Second stage of disease. Near Old Toll House, 

 Buckhurst Hill. 23rd June, 1900. 



Thus within an area of one and a half acres, twenty-four 

 were quite dead, and thirteen exhibited various stages of the 

 disease. 



At the commencement of tliis investigation, leave was 

 obtained from Mr. F. F. McKenzie, the Forest Superintendent, 

 to root up a dead tree, and to saw away branches from two 



