20 
CORN. 
cation from Mr. G. E. Palmer, jun., of Revell’s Hall, Hertford, who, 
it will be remembered, was the first observer of the attack of Hessian 
Fly in this country. Mr. Palmer wrote me :—“ I am now finding a 
considerable number of pupae of the Hessian Fly in our Barley, and 
fear that the attack will prove quite as bad, if not worse, than last 
year, and this notwithstanding the precautions we have taken to 
destroy the pupae during the autumn and winter. The field in which 
I have found most is quite half a mile from where we had the attack 
so badly last year, and was Mangolds last year. I am afraid this dry 
weather is all in favour of the ‘ fly,’ and I find that the hot dry ground 
is suffering most from the attack, as it did last year.” 
From the middle of July until the end of August reports were 
constantly transmitted of the appearance of the pest. 
It is difficult to arrange these on any special plan, as they often 
contain information on very various points ; and yet to separate these 
points one from another would destroy the value of the report. I have 
therefore, after the preceding notes of first appearance in England and 
Scotland, divided the others into English and Scottish observations, 
and arranged them according to date of appearance, with occasional 
notes to draw attention to points of especial importance. 
For the most part they will be found to refer simply to note of 
attack, with date and locality; but some observations will also be 
found of amount of injury, names of variety of Wheat grown, effects 
of agricultural treatment, and also of the presence of the “flax-seeds” 
on the stem being sometimes above the first, third, or fourth knot, as 
well as'above the second. 
Notes of Observation of Attack in England during July, 1887. 
On July 15th Mr. F. M. Campbell, President of the Herts Natural 
History Society, wrote me from Rose Hill, Hoddesdon, regarding the 
pest under consideration:—“I am sorry to say that it is not only 
plentiful in Mr. Palmer’s fields, but here also. Here I have found it 
in Wheat close to the root.” And on the 19th Mr. Campbell forwarded 
samples of the attacked Wheat, with the note :—“ Most of them are 
on the first joint, and one stalk has been visited both on first and 
second joint. It is evident most of the puparia about us in Wheat 
will be left on the field after reaping. C. destructor may be said 
to infest our whole parish.” And on the 26th Mr. Campbell added, 
“ Hessian Fly to my knowledge is over the whole Hoddesdon, Ware, 
and Hertford districts.” 
July 16th. The Rev. W. Hopkinson, writing from Sutton, Wans- 
ford, forwarded specimens of attack on Barley, with subsequent 
