CONTENTS. 
insects which cause them—Colours of Galls—Whence derived 
—The Galls of various trees and plants—The Cynips para- 
sites upon an insect—Galls produced by other insects—Mr. 
Rennie’s account of the BEETLE GALL of the Hawthorn— 
The BEETLE GALL of the Thistle—DirTrEROUS GALL-MAKERS 
—Leaf-miners and Galls—Size of the larvir of Leaf-miners— 
The perfect insects and their beauty—Method of displaying the 
insect--SoCIAL LEAF-MINERS—DIPTEROUS LEAF-MINERS 
—Animal Galls—The CHIGOE and its habits—Its curious egg- 
sac—Difficulty of extirpating it—The penalty of negligence 
—The Breize Fiies and their habitationx—WURBLES and 
their origin—Their influence upon cattle—The CLERUS and 
its ravages among the hives—The Dritus—Its remarkable 
form, and the difference between the sexes—The curious 
habitation which it makes 
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