EXPLANATION. 
- 4 - 
The plan of reference adopted in the following General Index 
is to give, after each entry, the year of the Report, with page 
reference following, thus :— 
Abraxas grossulariata, 1877,16,17; (&e.) 
Following this are the details, each year of reference occupying 
a separate paragraph, thus :— 
On White Eibes, 1877, 16; (&c.) 
In the Plant Index (p. 48), the Animal Index (p. 57), and the 
Index to Unclassified Hosts (p. 58), the ordinary English names 
of the hosts are indexed, the scientific name follows. By “hosts” 
is meant the plant, animal, &c., which is the special subject of 
infestation of the various insect attacks. The infesting insects 
are mentioned previously in the General Index. These special 
indexes are given to facilitate identification of an attack. 
