TUBNIP FLY. 5 



late-sown crops, as well as in some cases the total loss. Also the 

 deficiency of crop affects other points of agricultural supply, as want 

 of cattle-food, and consequent lesser supply of manure, depreciation 

 of price of stock, &c. ; so that it is almost impossible to say how far 

 the loss extends. 



A tolerably correct estimate may, however, be formed of loss on 

 seed and resowing, by calculating from the returns sent in what is the 

 number of acres that may be estimated as attacked, and the number 

 of re so wings requisite, together with the average price of seed and 

 amount used per acre, and cost per acre of the cultivation for resowing. 



Taking only the Turnip Fly attack in England in consideration for 

 present calculations, it appears that in the localities from which 

 returns were sent, in the following twenty-two counties, resowing 

 almost invariably took place, to a greater or less extent, once, in many" 

 cases twice, and in some three times ; in a few cases fly-attack is 

 named without specified details as causing serious injury, and from 

 the many points at which fly-attack is reported, it may fairly be 

 presumed to have been generally present in these districts; but in 

 the following estimates only half the below-mentioned acreage is 

 considered. 



Acreage under Turnips and Swedes, as returned upon the 4th of June, 1881, 

 in the undei' -mentioned counties of England, from the Agricultural 

 Returns of Great Britain : 



Counties. No. of Acres. 



Northumberland 46,927 



Cumberland 32,412 



Durham . 22,657 



Yorks 196,764 



Lincoln 142,300 



Norfolk 134,352 



Suffolk 58,145 



Essex 26,598 



Beds . 11,912 



Herts 22,732 



Kent 27,254 



Sussex , 30,472 



Hants . 79,173 



Wilts 58,157 



Dorset 38,639 



Somerset 30,754 



Devon 75,042 



Oxford 34,191 



Glo'ster 39,371 



Monmouth 7,561 



Hereford 22,753 



Derby 11,602 



Total T7l49,768 



