. Biological studies by the pupils of William Thompson Sedgwick. Published in commemoration of the twenty-fifth anniversary of his doctorate. Biology. 'o 7" Sides Go5 Fic. 9. Fig. 7.—Section of side showing one cage in position; the Cage projects into the lumen of the txii and is closed on the outside by a small stopper. Fig. 8.—Sides of box. Fig. g.—One of the wire-gauze cages showing wooden stopper, with hole for introductma oi mosquitoes closed by a wooden stopper. Conversely, and even more certainly, if a given concentration of fumigant will not kill in the experimental box, in a larg
. Biological studies by the pupils of William Thompson Sedgwick. Published in commemoration of the twenty-fifth anniversary of his doctorate. Biology. 'o 7" Sides Go5 Fic. 9. Fig. 7.—Section of side showing one cage in position; the Cage projects into the lumen of the txii and is closed on the outside by a small stopper. Fig. 8.—Sides of box. Fig. g.—One of the wire-gauze cages showing wooden stopper, with hole for introductma oi mosquitoes closed by a wooden stopper. Conversely, and even more certainly, if a given concentration of fumigant will not kill in the experimental box, in a large space the fumigation, under the same conditions, will be unsuccessful. A very interesting and important point has come up in con- nection with this work; namely, the rapidity with which the aciive fumigating agent is evolved makes a great deal of dilTerence in the efficiency of the fumigation. For example, with the less active fumigants and culicides, as pyrethrum, the dilTerence Ixnwecn com- plete success and complete failure may depend upon the ra|)idity with which the culicidal substance is evolved as smoke. One j)ound per 1,000 feet burned in three portions simultaneously is rather more. 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 Sedgwick, W. T. (William Thompson), 1855-1921; Ayers, S. Henry; Calkins, Gary N. (Gary Nathan), b. 1869; Dyar, Harrison G. (Harrison Gray), 1866-1929; Fuller, George Warren, 1868-; Gage, Stephen De Meritte, 1874-; Ham, Clara E; Hough, Theodore, 1865-; Jackson, Daniel Dana, 1870-; Jordan, Edwin Oakes, 1866-1936; Kendall, Arthur I; Leighton, Marshall Ora, 1874-1958; Lochridge, E. E; Matthews, Albert Prescott, 1874-; Milliken, Carl Spencer, 1876-; Phelps, Earle Bernard, 1876-; Prescott, Samuel Cate, 1872-; Rickards, Burt Ransom, 1876-; Rogers, Anne F; Stiles, Percy Gol
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbiology, bookyear1906
