Seniw ExaminoAion Papers, 1892. 
S63 
7. Mention the most commonly serviceable remedy for Black Aphis, or 
“ Colliers,” on growing bean plants. 
8. Mention any method of prevent ing or lessening likelihood of attack of 
maggot of the wheat bulb fly (JTylemyia coarctata) to young wheat. 
9. Name one or two kinds of insect (or eelworm) attacks to corn, clover, 
carrots, or onions, or any common crop, of which the recurrence can be pre- 
vented on infested land by deep ploughing, or ploughing with skim coulter 
attached ; or, where area is not too large, by trenching. 
10. Name the chemical manure which is often found of use in carrying 
mangel well through attack of leaf maggot ; i,e. of larva of Anthomyia 
Vfitw. 
11. In fruit farming some kinds of infestation may be got rid of by spraying 
with poisonous insecticides, and others by the use of sticky washes ; state one 
or two of the infestations to which each kind of application is suitable. 
REPORT OF ROTATION OF DISTRICTS 
COMMITTEE. 
The Committee are of opinion that the present system by which 
England is divided into seven districts for the purposes of the 
Society’s Meetings has worked on the whole e.xceedingly well. 
The only way in which it could be improved would perhaps be to 
make the Metropolis and certain of the Aery largest provincial 
towns ex-territorial, so far as the geographical distribution of the 
Society’s districts is concerned. Taking as a basis a population of 
half a million, the following towns are those which appear to need 
special consideration : — 
Population 
in 1891. 
London . # ; 4,211,000 
Liverpool 518,000 
Manchester, 505,000 ; with Salford, 198,000 . . 703,000 
Birmingham, 429,000 ; with Aston Manor, 69,000 . 498,000 
The nearest approaches to these figures are Leeds 309,000, and 
Shefiield 285,000 ; but there is not the same reason for according 
special treatment to these towns, as they are both in Yorkshire, a 
county which already constitutes a separate district by itself, and 
in which there are several large toAvns which are Avithin easy dis- 
tance of one another, if the Country Meeting should be held at any 
of them. 
The Committee think it Avill be generally agreed that it would 
be impossible to put London into any fixed rotation, as the Society’s 
Meeting could only be held in the metropolitan area under excep- 
tional circumstances and at uncertain intervals. There remain, 
therefore, as possible centres for the Country Meetings in the regular 
rotation, only Birmingham, Liverpool, and Manchester. The two 
last are in such close proximity that a Country Meeting at one 
would serve for the other, so that the Meeting might be held in the 
two cities alternatively. 
