No. 12. 



Destructive Insects. 



375 



For the next best sample bushel of red 

 wheat, .fl 



For the best do. white wheat, 3 



For the next best do. do. 1 



For the best sample bushel of rye, 2 



For the nc.\t best do. do. 1 



For the best sample bushel of flint corn, 2 

 J'or the next best do. do. 1 



For the best do. gourd seed corn, 2 



For the next best do. do. 1 



For the best do. mixed corn, 2 



For the next best do. do. 1 



For the best sample bushel of oats, 2 



For the next best do. do. 1 



For the best sample bushel of potatoes, 2 

 For the next best do. do. 1 



For the best bushel of sweet potatoes raised 

 in this State, $2 



For the next best do. do. 1 



For the best display of agricultural pro- 

 duce generally, $8 

 For the next best do. do. 6 

 A suitable premium will be given for any 

 new variety of grain of improved quality. 



A statement of the mode and manner of 

 making and preserving the different kinds 

 of butter, will be required of competitors. 

 The preserved or salted butler must have 

 been put up at least two months-previous to 

 the Exhibition. 



A PLOUGHING MATCH, 



For the trial of ploughs and ploughing, ^yill 

 take place on the second day of the Exhibi- 

 tion, 1st of October, at nine o'clock. 



0^7= Stock entered for the foregoing pre- 

 miums cannot compete for others. 



No animal that has previously taken the 

 Society's first premium, will be allowed to 

 compete in the same class. 



Ample evidence will be required as re- 

 gards the pedigree, age, and character, of 

 all stock entered for premium. 



Premiums will be paid in money or Agri- 

 cultural publications, as may be preferred. 

 All premiums uncalled for within six months 

 from the time of holding the Exhibition, will 

 be considered as donations to the Society. 



The Judges are authorized to withhold 

 premiums where the object is not entitled to 

 distinction ; and where but one of a class is 

 exhibited, they will award such premium 

 as they think it merits. Those persons who 

 intend bringing animals for competition, 

 must inform tlie Committee of Arrangement 

 before ten o'clock on the first day of the 

 Exhibition. 



Premiums to be confined to animals owned 

 exclusively in this State, except where as- 

 surance is given that they will be allowed 

 to remain here at least nine months. 



All slock, Szc, contributed, must remain 

 on the ground during tiic two days of Exhi- 

 bition. 



A. S. Roberts, 

 Kenderton Smith, 

 Isaac VV. Hoberts, 

 Henry Chouley, 

 George Blight, 

 Asher Moore, 

 Aaron Clement, 

 Committee of Arrangement. 



For the Farmers' Cabinet. 

 Destructive Insects. 



Mr. Editor, — Some very destructive ca- 

 terpillars have made their appearance in this 

 region within a few years, and it will be well 

 for growers of fruit to turn their attention, 

 at an early day, to their trees. 



Some of these were taken the first of 

 September last, — length from one to one 

 and a half inches ; head black, body striped 

 lengthwise, with six yellow and six brown; . 

 central slripe above, brown; sparsely covered 

 with stiff hairs or bristles, most of which 

 were at each extremity — growth rapid from 

 a week to ten days, when they underwent a 

 change; — head double its former size — hav- 

 ing been less in thickness than the body, and 

 now greater — brown stripes dark, length of 

 body diminished and more densely covered 

 with hair; growth more rapid; amount of 

 leaves devoured immense, in proportion to 

 size of larva. Continued to feed voraciously 

 for two weeks, when they burrowed in the 

 earth, and in three or four days had assumed 

 the pupa form. So soon as the imago emerges 

 — if you deem any part of this worthy of 

 publication — you may hear more. 



These feed only at night— as do the larva 

 of most lepidopterfE — and destroy the entire 

 leaf, so that wherever we see a branch di- 

 vested of its leaves, we may know some at- 

 tention is necessary. During the day they 

 remain in groups on a small branch or peti^ 

 ole, attached by their central part, both ex- 

 tremities being elevated. This is very pe- 

 culiar, and enables them to occupy much 

 less space on the branch. This is the pro- 

 per time to collect and destroy them. If 

 not attended to, they may in a few years be- 

 come as numerous as they, or similar ones, 

 were in Massachusetts, and subsequently in 

 Illinois, leaving large orchards entirely leaf- 

 less. 



The 7t'] of last September, for the first, I 

 discovered a different species from the pre- 

 ceding. These larvte were striped, yellow 

 and brown, as the first, but had an enlarged 

 red ring — the third f'rom the head — from 

 which sprung four black spines, longer than 



