. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 214 JOSEPHINE ALBERTA WILLIS. Some idea of the striking characteristics of the movements of the grasshoppers produced during and after they are under the influence of carbon dioxide, may be derived from the following paragraph. i -. c ~ r20 •10 5C minutes exposed FIG. 2. Abscissa: Length in minutes of exposure to the gas. Ordinates at left, rate p. min. exposure. At right, time in minutes. Curve A = Time in minutes to the first movement. Curve B = Time in minutes to the recovery. Curve A' = Rate of first movement per minute
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 214 JOSEPHINE ALBERTA WILLIS. Some idea of the striking characteristics of the movements of the grasshoppers produced during and after they are under the influence of carbon dioxide, may be derived from the following paragraph. i -. c ~ r20 •10 5C minutes exposed FIG. 2. Abscissa: Length in minutes of exposure to the gas. Ordinates at left, rate p. min. exposure. At right, time in minutes. Curve A = Time in minutes to the first movement. Curve B = Time in minutes to the recovery. Curve A' = Rate of first movement per minute exposure. Curve B' = Rate of the recovery per minute exposure. (For further description see text.) When an animal is subjected to the gas, it undergoes violent reflexes in all appendages—at times, the abdomen, due to stimulated respiratory movements, curls and uncurls; however, some animals make no movements. The period before asphyxia- tion occurs is less than one minute, usually about twenty to thirty seconds. After asphyxiation the animal becomes stiff or limp, depending upon the individual, and apparently lifeless, although some may exhibit slight reflexes. They remain in this condition until removed from the gas. In longer exposures some animals secrete an excessive amount of saliva and the antenna; droop. The salivary secretion may occur at any stage or upon removal from the gas. The first movements after removal from the gas. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
