 | Thaddeus William Harris, Massachusetts. Zoological and Botanical Survey - 1841 - 484 páginas
...middle of May, and continue generally till the twentieth of June. In the morning and evening twilight they come forth from their retreats, and fly about...of trees, the tender leaves of which they devour. Pear-trees are particularly subject to their attacks, but the elm, hickory, poplar, oak, and probably... | |
 | 1843 - 498 páginas
...the middle of May, and continue generally till the 20th of June. In the morning and evening twilight they come forth from their retreats, and fly about with a humming and nestling sound among the branches of trees, the tender leaves of which they devour." " Pear trees are... | |
 | Cuthbert William Johnson - 1844 - 1210 páginas
...middle of May, and continue generally till the twentieth of June. In the morning and evening twilights they come forth from their retreats, and fly about with a humming чА rustling sound among the branches of 'fees, the tender leaves of which they devour. Pear-trees... | |
 | Thaddeus William Harris - 1852 - 536 páginas
...middle of May, and continue generally till the twentieth of June. In the morning and evening twilight they come forth from their retreats, and fly about...of trees, the tender leaves of which they devour. Pear-trees are particularly subject to their attacks, but the elm, hickory, poplar, oak, and probably... | |
 | Thaddeus William Harris - 1862 - 700 páginas
...middle of May, and continue generally till the twentieth of June. In the morning and evening twilight they come forth from their retreats, and fly about...of trees, the tender leaves of which they devour. Pear-trees are particularly subject to their attacks, but the elm, hickory, poplar, oak, and probably... | |
 | Cuthbert William Johnson - 1869 - 1296 páginas
...middle of May, and continue generally till the twentieth of June. In the morning and evening twilights they come forth from their retreats, and fly about...the branches of trees, the tender leaves of which the v devour. Pear-trees are particularly subject to their attacks, but the elm, hickory, poplar, oak,... | |
 | Massachusetts. State Board of Agriculture - 1873 - 624 páginas
...middle of May, and continues generally till the twentieth of June. "In the morning and evening twilight they come forth from their retreats, and fly about...of trees, the tender leaves of which they devour. Pear-trees are particularly subject to their attacks, but the elm, hickory, poplar, oak, and probably... | |
 | 1878 - 798 páginas
...of concealing themselves. At dusk they issue from their hiding places and fly about with a buzzing sound among the branches of trees, the tender leaves of which they devour ; the Pear tree, the Oak, Poplar, Hickory, Silver Abele and Sweet Gum all suffer more or less from... | |
 | 1879 - 530 páginas
...of concealing themselves. At dusk they issue from their hiding places and fly about with a buzzing sound among the branches of trees, the tender leaves of which they devour ; the Pear tree, the Oak, Poplar, Hickory, Silver Abele and Sweet Gum. all suffer more or less from... | |
 | William Saunders - 1883 - 448 páginas
...of concealing themselves. At dusk they issue from dieir hiding-places and fly about with a buzzing sound among the branches of trees, the tender leaves of which they devour. The pear, oak, poplar, hickory, sifter abele, and sweet-gum all suffer more or less from their attacks.... | |
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Pear-trees are particularly subject to their attacks, but the elm, hickory, poplar, oak, and probably also other kinds of trees, are frequented and injured by them. 
