Dec. 1894.] 



INJUEIOUS INSECTS AND FUNGI. 



209 



nnsprayed test rows considerable harm was caused by both of 

 these fungi. 



In the experiments in the United States, the Bordeaux mixture 

 was applied when the plants were about 6 inches high, and at 

 intervals of about 14 days. Iq Kent, spraying was commenced 

 late when the plants were high, and repeated twice in some 

 cases. 



It would be most desirable to spray potato plants for this 

 affection just as for that of the Phytophthoi a, both as a pre- 

 ventive and as a curative measure. The results of experiments 

 in the last season have proved that spraying with Bordeaux 

 mixture is of the greatest value in preventing and checking the 

 attacks of the old enemy Phytophthora, and according to the 

 records of foreign and home experiments it appears to be equally 

 effectual in the case of the new enemy, or newly discovered 

 enemy, Macrosporium solani. 



Though it is not yet quite clear where the resting spores of 

 this fungus pass the winter, it would be wise to destroy every 

 particle of decaying leaves and stems in infected fields. 



The Celeky Fly (Tephritis onopordinis, Fabr.). 



1. Fly magnified. 2. Larva magnified. 3. Pupa, natural size, 4. Leaf mined 

 by larvae. Lines show length of fly and larva. 



Much harm has been caused to celery and parsnips this 

 autumn by the maggots of this celery fly. Though tliis attack 

 came comparatively late, it was very severe, and maggots were 

 found in the leavtfs up to the end of November. In mild 

 seasons, it is said, tliey are found as long as the leaves remain 

 on the plants. Parsnips wei'e similarly attacked in many places. 



O 84193. E 



