49° 



MV GARDEN. 



The larvse (fig. 1082, Nos. i, 3, 4, and No. 2 magnified) of the 

 Carrot Fly {Psila roses) prey upon the roots of the carrot, which they 

 eat along, thus damaging its quality. It changes into a pupa (No. 

 5, and No. 6 magnified), and then into the perfect insect (No. 7, 

 and No. 8 magnified). 



In the environs of London the young pears have been much at- 

 tacked by a small maggot (fig. 1083 : A natural size, B magnified), 

 which lives upon the fruit in the early stage. They appear to stimulate 

 the growth of the young pear, which soon attains to a larger size than 

 its neighbours, but only to promote its premature decay, as the pear 

 drops about the last week in May. Sometimes all the pears on a tree 

 are destroyed by this pest. I think the best plan to get rid of them, 

 in small gardens, would be to collect and burn the overgrown pears 

 the last week in May. This maggot 

 has not yet attacked my garden so 

 much as it has others. 



Fig. 1083. — Pear with Larvae. 



Fig. 1084.— Onion Fly. 



Onions are sometimes destroyed by the Onion Fly {Anthomyia 

 ceparum, fig. 1084). The eggs are deposited on the onion close to the 

 earth, and the maggots eat their way to its heart. This fly has not, 

 however, been noticed in my garden. 



The larvae of the Holly-fly {Phytomyza ilicis) eat the parenchyma 

 of the leaves of the holly, as the larvae of the celery-fly do the leaves 

 of that plant. 



" For oft, engendei-'d by. the hazy moth, 

 Myriads on myriads, insect armies waft 

 Keen in the poison'd breeze ; and wasteful eat 

 Through buds and bark, into the blacken'd core 

 Their eager way,"— Thomson's Seasons. 



