 | United States. Department of Agriculture - 1883 - 616 pages
...appearing after the poison was applied, but we/e attached to the developed leaves, and 1ère the larvie generally got 'the poison to prevent their attack...have become poisoned before depositing the eggs. The eih'cieucy of London purple being established, it will generally be preferred to other arsenicals,... | |
 | United States. Department of Agriculture - 1883 - 610 pages
...appearing after the poison was applied, but were attached to the developed leaves, and here the larvœ generally got the poison to prevent their attack upon...throughout the season, and often several could be seen feedingVm each tree. Possibly many of thèse may have become poisoned before depositing the eggs. The... | |
 | 1883 - 632 pages
...appearing after the poison was applied, but were attached to the developed leaves, and here the larva} generally got the poison to prevent their attack upon...The adults, which fly from tree to tree, appeared plenti fully without much interruption throughout the season, and often several could be seen feeding... | |
 | government printing office - 1884 - 732 pages
...appearing after the poison was applied, bnt were attached to the developed leaves, and here the larrie generally got the poison to prevent their attack upon...may have become poisoned before depositing the eggs. together with good results. It is thought that by mixing in this way lew flonr will suffice. Three-eighths... | |
 | U.S Department of Agriculture - 1884 - 752 pages
...appearing after the poison was applied, but were attached to the developed leaves, and here the larvae generally got the poison to prevent their attack upon...often several could be seen feeding on each tree. Powibly many of these may have become poisoned before depositing the eggs. The e'fficiency of London... | |
 | United States. Department of Agriculture - 1884 - 754 pages
...appearing after the poison was applied, but were attached to the developed leaves, and here the larvas generally got the poison to prevent their attack upon the aftergrowth. Still the young leaves oecame perforated to some extent. The adults, which fly from tree to tree* appeared plentiful without... | |
 | United States. Department of Agriculture - 1884 - 756 pages
...appearing after the poison was applied, but were attached to the developed loaves, and here the larvie generally got the poison to prevent their attack upon the aftergrowth. Still tho young leaves became perforated to some extent. The adults, which fly from tree to tree, appeared... | |
 | United States Entomological Commission - 1890 - 1078 pages
...appearing after the poison was applied, but were attached to the developed leaves, and here the larvae generally got the poison to prevent their attack upon...The adults, which fly from tree to tree, appeared plentifully without much interruption throughout the season, and often several could be seen feeding... | |
 | United States. Bureau of Entomology - 1883 - 682 pages
...appearing after the poison was applied, but were attached to the developed leaves, and here the larvae generally got the poison to prevent their attack upon...before depositing the eggs. The efficiency of London imrple being established, it will generally be preferred to other arsenicals, because of its cheapness,... | |
 | 1884 - 814 pages
...the poison was applied, but were attached to the developed leaves, and here the larva? generally cot the poison to prevent their attack upon the aftergrowth. Still the young leaves oecame perforated to some extent. The adults, which fly from tree to tree, appeared plentiful without... | |
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... generally got the poison to prevent their attack upon the aftergrowth. Still the young leaves became perforated to some extent. The adults, which fly from tree to tree, appeared plentiful without much interruption throughout the season, and often... 