. A manual of injurious insects with methods of prevention and remedy for their attacks to food crops, forest trees, and fruit. To which is appended a short introduction to entomology . th quick-lime to cut off pest in-vaders. We fed the adjoining land very close with sheep andcured any Slugs therein. We then dressed the Turnip landwith a mixture of soot and lime in one part and salt in theother. The first day did but little good ; the second doseswere effectual, and, being repeated at dawn and dusk, killedthe enemy. The soot and lime acted best. We have now a good crop of Bape, which was sown
. A manual of injurious insects with methods of prevention and remedy for their attacks to food crops, forest trees, and fruit. To which is appended a short introduction to entomology . th quick-lime to cut off pest in-vaders. We fed the adjoining land very close with sheep andcured any Slugs therein. We then dressed the Turnip landwith a mixture of soot and lime in one part and salt in theother. The first day did but little good ; the second doseswere effectual, and, being repeated at dawn and dusk, killedthe enemy. The soot and lime acted best. We have now a good crop of Bape, which was sown whenthe Turnips were devoured, and of Turnips in the parts whichwere saved by repeated dressings. This plan has been found since then to answer very wellwhere there was bad infestation. TURNIPS. TURNir APHIS. 177 Disturbing the surface of the ground so as to throw out theeggs, and in gardens clearing away all the different rubbishamongst which they shelter, also strewing Cabbage leaves toattract them, and clearing the Slugs from beneath these everymorning, are well-known remedies. TURNIPS. Turnip Aphis (Green Ply). Aphis rapa, lUantki, 1—4, Ai^lds jloris-rapce; 5—8, A. rapce, nat. size and magnified. This Aphis is common in the summer on many kinds ofplants, and is especially hurtful to Turnips, Swedes, andPotatoes. It is chiefly to be found on the under side of theleaves, but sometimes occurs in such numbers as to smotherthe plants; and the vast swarms of Green Fly which at timesfill the air, as in the autumn of 1834 and in 1868, are believedto have been of this species. The Aphis is very variable in appearance; the winglessviviparous female is of some shade of green or yellow, butoften of an ochreous-red in autumn ; the winged viviparousfemale is for the most part black, with reddish yellow abdomen, N 178 TURNIPS. striped and spotted with black; ochreous legs; and wingsyellow at the base, with yellow main vein ; the insect is,h
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