. 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 . that he hadever gone out with a lantern by night, and examined a rowof growing Peas or Beans, without finding the beetles uponthe leaves in hundreds, all busily nibbling away at the such times they are not nearly so susceptible to alarm, anddo not fall at the vibration of a passing footstep. ... Ialso find that a thick layer of soot is as efficacious as any-thing for keeping them away. Only this must a
. 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 . that he hadever gone out with a lantern by night, and examined a rowof growing Peas or Beans, without finding the beetles uponthe leaves in hundreds, all busily nibbling away at the such times they are not nearly so susceptible to alarm, anddo not fall at the vibration of a passing footstep. ... Ialso find that a thick layer of soot is as efficacious as any-thing for keeping them away. Only this must always berenewed after a shower of rain. It was also noted, by Mr. Malcolm Dunn, of Dalkeith, anexcellent authority in matters of injurious insect prevention,that a dressing of lime or soot given to the Peas (wettingthem first to make it adhere) was an easily applied andgenerally effective remedy. Any dressing that was dis-tasteful to the beetles, which could be thrown on the groundalong the rows of Peas, and fill in the crannies down whichthey hide when disturbed from their work above, would helpto lessen the mischief. Beetle. Ihnniihord (l,ctinliiinii,i, ^%^ 2 1 aud 2, Colorado JJoutlc, luuguiliud, and iiat, «i/sc; 3, catoipillai ; 1, eggs. 170 POTATOES. This beetle is not mentioned here as a British InjuriousInsect, nor as one which (from the experience and knowledgeof its life-history gained since 1877) can be deemed likely tobe injurious to a serious extent in this country. It is howeverof interest just to notice it, as at the above date the steadyeastward advance of the pest raised grave fears of this scourgeto the American Potato crops gaining a footing in thiscountry. The eggs, figured p. 169, are laid on the young shoots orbeneath the leaves of the Potato ; the grubs are orange orreddish, and change to pupae in the ground; and the beetlesare also distinguishable by their orange colour and by having(besides a large black spear-shaped mark on the
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Keywords: ., bookcentury1800, bookdecade1890, bookidmanualofinju, bookyear1890
