50 
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Habits, natural history, and ravages of Caloptenus spretus; summary of the 
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309. Dawson, G-. M. Notes on the locust in the Northwest in 1870. 
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Ravages of Caloptenus spretus; regions invaded; summary of the more import¬ 
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370. Dawson, John William. Notice of specimens of the wheat midge 
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371. Dean, A. Mounding peach trees again. Amer. Ent., July, 1869? 
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Methods of mounding; effectiveness of the same; habits of Sannina exitiosy. 
372. Dearborn, Henry Alexander Scammell. [Locust borers.] 
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374. Dearborn, H. A, S. Remarks on the canker worm. <New 
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Treats of the habits, food-plants, and means against the canker worm. 
375. Delafield, John. Insects [in a general view and agricultural 
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tritici], Hessian fly [Cecidomyia destructor], Wire-worms [Elateridie], Cut¬ 
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376. Denning, William. On the decay of apple trees. <Traus. Soc. 
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377. Dennis, Jonathan, Jr. Canker worms. <New England Farmer, 
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378. Dennis, J., Jr. Dennis’s patent troughs. <NewEnglandFarmer, 
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379. Dennis, J., Jr. Canker worm troughs. <New England Farmer, 
9 December, 1840, v. 19, p. 179. 
Validity of Dennis's patent for leaden oil-troughs; seaweed for packing or 
the packing should be poisoned. 
