78 



CORN ANP GRASS. 



Stem of Barley showing 

 blackened maggot-chan- 

 nel. 



field was sown in three patches as the pre- 

 ceding crop of Swedes was fed off. 



" The first patch was sown in March, and 

 is practicahy free from injury. 



" The second part was sown on April Gth, 

 and is affected to the extent of about 2 per 

 cent. 



" The third part was sown on May 3rd, and 

 has suffered to the extent of not less than 

 20 per cent. 



"In 1887, Mr. J. G. Mann, of Bishop's 

 Stortford reported to me : — ' Chlorops Ucni- 

 opus swarms in my late Barley, and also in 

 my neighbour's. I also went into North 

 Essex and South Cambs. last week, and 

 found it there in all the late Barley.' " 



Mr. Edm. Riley, of Hessle, near Hull, re- 

 porting on a badly infested field, mentioned, 

 — " the attack was not 'Hessian Fly,' as it 

 had begun /ro?;i tJie ear and worked down to 

 the first joint.'" . . . " it had done ten times 

 the amount of damage done by the * Hessian 

 Fly.' I and two other very practical farmers 

 thought the crop was dumsiged f idly one-third. 

 The Barley (specimens sent) was sown late ; 

 the previous crop Turnip, and very good; one 

 or two other late pieces of Barley are so 

 infested." 



I had also another note in 1887 (sent by 

 Mr. J. Newman from Wilstead, near Bed- 

 ford), mentioning that he found "a great 

 many more" (of the infestations) "in late- 

 sown Barley than in early-sown."* 



When attack comes on the pilant not quite 

 in its early growth, the ear may be so far ad- 

 vanced, or the plant so strong that it will push 

 on, and very likely three quarters of the ear 

 may be saved, as shown in figure ; but where 

 the attack comes on it whilst very young, aa 

 with late-sown Barley, or from any cause in 

 state of land or state of weather, the plant 

 is stunted down, as was the case very gener- 

 ally in 1889 (see fig., p. 77), the loss is total. 



Attack has l^een recorded (and I have ob- 

 served it myself) as especially bad on wet, 

 low-lying parts of fields, or along the water- 



* See 'Eepoit of Injurious Insects,' observations (by 

 Ed.) for 1888, pp. 55 and 58. 



