116 On the Gojfee-horer 



unwhitewashed ; this they soon found out, and deposited 

 there the eggs. This evening a shower of rain fell, when 

 I exposed the open glass to its full influence. The beetles 

 sought shelter under the primaries, and are, I believe, 

 not much afi'ected by the rain. 



As a resume of all these experiments and observations, 

 I venture to draw the following conclusions, in addition 

 to, and modification of, my former statements : — 



1. It is the beetle and not the larva, which, for its 

 egress from the tree, eats a hole through the bark. 

 Any artificial injection or filling up of these holes to de- 

 stroy the pupte or larvae, would be like locking the door 

 after the horse is stolen. 



2. Since the larvaj in the tree cannot be reached by 

 any external remedy, we are left to deal with the beetle 

 and its eggs only. 



3. The beetle is diurnal in its activity, not gregarious 

 or migratory, and unaffected by light at night. It is 

 generally quiescent during the cool hours of the day, 

 and seated upon the stem. It may therefore with ease 

 be collected. No doubt many are cai'ried off* by birds ; 

 these should therefore be encouraged on an estate by 

 fruit-yielding shade trees. It appears that lizards also 

 are active in destroying the beetles. 



4. The beetles make their appearance directly after 

 the monsoon, propagate their species, and die oft', but 

 are replaced by new generations all during the dry 

 weather. I have not observed that they feed on any 

 part of the coffee-tree. 



6. The eggs are hatched within a fortnight after de- 

 position, and it is in the state of the larva that the insect 

 has its longest existence, which may be estimated at 

 about nine months. The pupa lives as such in a quiescent 

 state in the tree for about two months, and the beetle, 

 after its egress, exists but for the short space of a fort- 

 night. 



6. There is no human remedy which would, as by 

 magic, dispose of the Borer-brood wholesale ; we must 

 grapple with the plague in patient, painstaking, and suc- 

 cessive efforts, which will be the easier, the younger an 

 estate is, and the less damage has been done. 



7. Every attention must now be directed towards the 

 prevention of a successful deposition of the beetle^s eggs, 

 or the hatching of the same. 



8. The cheapest and most eflftcient way to obtain 

 both objects, appears to me this — first, rubbing energe- 



