Bulletin

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U.S. Government Printing Office, 1896
 

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Página 5 - VI. AMENDMENTS Amendments, after having been approved by a majority of the Executive Committee present at a meeting regularly called, may be adopted by a majority vote of the members present at any regular meeting of the Association.
Página 36 - The natural rich reddish color of the limbs of the peach and apple is quite obscured when these trees are thickly infested, and they have then every appearance of being coated with lime or ashes. When the scales are crushed by scraping, a yellowish oily liquid will appear, resulting from the crushing of the soft yellow insects beneath the scales...
Página 95 - Pratt is very successfully used in London, England, consists of any deep vessel or jar, against which a number of sticks are placed, and bent over so that they project into the interior of the vessel for a few inches. The vessel is partially filled with stale beer or ale, a liquid for which roaches seem to have a special fondness. In the morning these vessels are found charged with great quantities of dead and dying roaches, which have climbed up the inclined sticks and slipped off into the vessel.
Página 89 - ... to facilitate their exit. On hatching, it is said the young are often kept together by the parent and brooded over and cared for, and at least a colony of young will usually be found associated with one or two older individuals. These insects are more or less gregarious, notably so in the case of the black beetle of Europe and to a less extent with the German and American roaches. They pass through a variable number of molts, sometimes as many as seven, the skin splitting along the back and the...
Página 20 - The remedy which depends upon draining breeding places needs no extended discussion. Naturally the draining off of the water of pools will prevent mosquitoes from breeding there, and the possibility of such draining and the means by which it may be done will vary with each individual case. The writer is informed that an elaborate bit of work which has been done at Virginia Beach bears on this method. Behind the hotels at this place, the hotels themselves fronting upon the beach, was a large fresh-water...
Página 44 - H. canicularis is distinguished from the ordinary house fly by its paler and more pointed body and conical shape. The male, which is much commoner than the female, has large pale patches at the base of the abdomen, which are translucent when the fly is seen on a window pane.
Página 41 - Contrary to the custom of other insects, it always appears when the cold weather commences in December, and as invariably disappears on the approach of warm weather, which is about the 1st of April. It is said to have been remarked first in the winter of 1807, during a snowstorm, when its effects upon...
Página 100 - Richardson the Secretary was instructed to cast the ballot of the Association for the gentlemen as nominated.
Página 9 - Where it came from is not definitely known, but at the present time it is pretty well distributed throughout the states of California, Oregon and Washington and in British Columbia. It has also...
Página 33 - ... able review of previous writings on the subject, and is illustrated with figures taken from Verdat. In the American Entomologist (Vol. Ill, pp. 191-193, August, 1880) Dr. WS Barnard described the stages, with figures of the eggs, of a species common in the mountain streams around Ithaca, NY The eggs were found on the rocks on the banks a few inches above the surface of the water; the newly-hatched...

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