CONTENTS. V" 



Page. 



Laundry Soap 108 



Pyrethrum 108 



Carbolic Acid 108 



Washing off the Females and Egg Masses with Water 108 



The Obhque-Banded Leaf Holler 109 



Pandemia lam,prosana 109 



A leurodes aceris 110 



Lygus invitus 110 



Description Ill 



VII. Insects Injurious to the Elm 112 



The Elm Borer 112 



The Elm Plant Louse 114 



An Elm Bark Louse 115 



The Three-Banded Leaf Hopper 115 



VIII. Brief Miscellaneous Notes 116 



Explanation of P lates ' 119 



Plates 124 



Errata 136 



Index 137 



APPENDI". 



