HONEY-DEW. 221 



A. No. Honey-dew is a sweet liquid 

 shed by a very small insect (called the 

 aphis), and deposited in autumn on the 

 under surface of favourite leaves. 



Q. Does HONEY-DEW INJURE leaves, or do 

 them good ? 



A. It injures them very much, be- 

 cause it fills the pores of the leaf with a 

 thick clammy liquid; and, therefore, 

 prevents the leaf from transpiring and 

 absorbing. 



Q. What EFFECT has honey-dew upon the 

 APPEARANCE of a leaf? 



A. After a little time, the leaf (being 

 smothered and starved) begins to turn a 

 dingy yellow. 



Q. Are not ANTS very FOND of HONEY-DEW 

 A. Yes; and they crawl up the loftiest 

 trees, in order to obtain it. 



Q. What is the cause of MIST (or earth-fog) ? 



A. If the night has been very calm, 

 a rapid radiation of heat has taken place 

 in the earth ; in consequence of which, 

 the air (resting on the earth) is made so 

 cold, that its vapour is chilled, and 

 condensed into a thick mist. 



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