COXTKXTS. 
l'ace. 
Introduction 5 
Distribution and present condition 5 
Closely allied scales 11 
Food plants 12 
Relation of climate to spread 13 
Natural enemies 14 
Remedies ..- 16 
Gas treatment 16 
Pure kercsene 16 
Automatic mixture of kerosene and water 23 
Effect of winter washes upon blossoming 23 
Preparing the trees for treatment 23 
A precaution iu destroying ruined trees 24 
Other remedies 24 
Legislation 25 
The German edict 26 
Bibliography 27 
Omissions 28 
Supplementary 28 
3 
