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AUSTRALIAN AGRICULTURE. 



4 and 5, scale larvae, much magnified ; G, black scale ; 2, 

 insect in the winged state. Their methods of life make 

 scale insects more difficult of eradication than the ordinary 

 aphides. But by the use of clay paint and alkaline oil 

 mixtures they also can be kept in check. 



Codlin Moth Grub. This, the carpocupua pomonella, 

 " the fruit devourer " of science, is one of the worst of 

 fruit eaters. The mother insect, A in illustration, appears 

 as a moth during August and September, and lays eggs 



Coil. in Moths on Apple Blossoms. 



in the flower cups of apples (B), pears, and other fruits at 

 times. The eggs (C) hatch in from 10 to 20 days, and the 

 grubs eat into the young apples. 



Risks from Introducing Plants and Animals. That 

 many of the worst parasites from which both plants and 

 animals suffer have been introduced is only too true. The 

 greatest care is necessary in introducing new things, for 

 parasites, both fungoid and insect, exist in other countries 

 much more destructive than any we have yet had to 

 encounter. 



The " Buffalo gnat " of America is a fearful pest, and 

 would be a bad visitor here. It propagates in water, the 



