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134 the x. c. Board of health. ^ eggs develop into the larvse or maggot state in about eight hours. See Figure 2. The embrvo fly remains in the maggot state for about five days, burrowing around in the filth and feasting on it to his heart's eon-tent. During these five days he sheds his covering twice and emerges into the pupa or resting stage. From this stage the full grow^n fly emerges in about four to five days and sets out on his filth and death- Fig, 2. Fly larvae natural size and much enlarged. {After Metcalf,) dealing career. This makes the total period of development of the fly about ten days in warm weather. Under very favorable conditions as regards heat, moisture and filth, they may even develop in eight days. Flies do not grow after passing the pupa stage. Little flies sometimes observed are of a different kind from the ordinary houseflies. flies' habits of eating. Immediately after hatching into a full grown fly, his first impulse is to feed. He usually gets his initial meal right at his birth palce. He is never particular about the kind of food he eats. It matters little to him if it is manure, garbage, human excrement or something else. He rarely establishes permanent quarters, however, at his birthplace. Shortly after birth he takes his initial flight to some near-by kitchen or dining room. Should screens at the windows and doors embarrass him, he is very willing to take a few meals at the open garbage pail while waiting his chance to get into the house. Flies are prodigious eaters. They have been known to devour nearly half their weight of food at a time. Furthermore, they like to eat at very brief intervals during daylight hours. And here follows one of the most dangerous, as well as nauseating features about flies. Their digestive processes are extremely simple and the food they eat passes through their bodies with the greatest facility. Many substances eaten by flies pass through their digestive tracts unchanged by their weak digestive fluid. As a result, after a fly has dined on tuberculosis sputum or typhoid dejecta, analyses of the resulting fly-specks show the presence of the live germs of these diseases. As might be expected, since flies are great feeders they deposit correspondingly large quantities of excreta. A single fly confined in a paper box has been found to produce fifty fly-specks in the course of twenty-four hours. The reason even more fly-specks are not visible is that they are largely liquid and frequently almost colorless. Many authorities now believe that there is far more danger from disease germs that pass through flies' bodies than from those that are entangled on their feet and legs.
Object Description
Rating | |
Fixed Title * | NCHH-03: Bulletin of the North Carolina Board of Health [1886-1913] |
Document Title | Bulletin of the North Carolina Board of Health [1886-1913] |
Subject Topical | Public health -- North Carolina -- Periodicals. |
Subject Topical Other | Public Health -- North Carolina -- Periodicals. |
Description | Published: 1886-1913. |
Contributor | North Carolina. State Board of Health. |
Publisher | Wilmington, N.C. : Secretary of the Board, 1886-1913. |
Repository | University of North Carolina at Chapel Hill. Health Sciences Library. |
Host | University of North Carolina at Chapel Hill |
Date | 1912-1913 |
Identifier | NCHH-03-027 |
Form General | Periodicals |
Language | English |
Rights | This item is part of the North Carolina History of Health Digital Collection. Some materials in the Collection are protected by U.S. copyright law. This item is presented by the Health Sciences Library of the University of North Carolina at Chapel Hill for research and educational purposes. It may not be republished or distributed without permission of the Health Sciences Library. |
Digital Collection | North Carolina History of Health Digital Collection |
Sponsor | The North Carolina History of Health Digital Collection is an open access publishing initiative of the Health Sciences Library of the University of North Carolina at Chapel Hill. Financial support for the initiative was provided in part by a multi-year NC ECHO (Exploring Cultural Heritage Online) digitization grant, awarded by the State Library of North Carolina, and funded through the Library Services and Technology Act (LSTA). |
Volume Number | 27 |
Health Discipline | Public Health |
Digital Format | JPEG 2000 |
Print / Download PDF Version | http://archives.hsl.unc.edu/nchh/nchh-03/nchh-03-027.pdf |
Document Sort | all; group-b; nchh-03 |
Volume Link | http://dc.lib.unc.edu/cdm/search/collection/nchh/field/identi/searchterm/NCHH-03-027 |
Title Link | http://dc.lib.unc.edu/cdm/search/collection/nchh/field/documa/searchterm/NCHH-03 |
Catalog Record link | http://search.lib.unc.edu/search?R=UNCb1324480 |
Description
Fixed Title * | Page 134 (image) |
Document Title | Bulletin of the North Carolina Board of Health [1886-1913] |
Subject Topical | Public health -- North Carolina -- Periodicals. |
Subject Topical Other | Public Health -- North Carolina -- Periodicals. |
Description | Published: 1886-1913. |
Contributor | North Carolina. State Board of Health. |
Publisher | Wilmington, N.C. : Secretary of the Board, 1886-1913. |
Repository | University of North Carolina at Chapel Hill. Health Sciences Library. |
Host | University of North Carolina at Chapel Hill |
Date | 1912-1913 |
Identifier | NCHH-03-027-0142 |
Form General | Periodicals |
Page Type | all; all images; photo; article |
Language | English |
Rights | This item is part of the North Carolina History of Health Digital Collection. Some materials in the Collection are protected by U.S. copyright law. This item is presented by the Health Sciences Library of the University of North Carolina at Chapel Hill for research and educational purposes. It may not be republished or distributed without permission of the Health Sciences Library. |
Filename | bulletinofnorthc27nort_0142.jp2 |
Digital Collection | North Carolina History of Health Digital Collection |
Sponsor | The North Carolina History of Health Digital Collection is an open access publishing initiative of the Health Sciences Library of the University of North Carolina at Chapel Hill. Financial support for the initiative was provided in part by a multi-year NC ECHO (Exploring Cultural Heritage Online) digitization grant, awarded by the State Library of North Carolina, and funded through the Library Services and Technology Act (LSTA). |
Volume Number | 27 |
Issue Number | 4 |
Page Number | 134 |
Health Discipline | Public Health |
Full Text | 134 the x. c. Board of health. ^ eggs develop into the larvse or maggot state in about eight hours. See Figure 2. The embrvo fly remains in the maggot state for about five days, burrowing around in the filth and feasting on it to his heart's eon-tent. During these five days he sheds his covering twice and emerges into the pupa or resting stage. From this stage the full grow^n fly emerges in about four to five days and sets out on his filth and death- Fig, 2. Fly larvae natural size and much enlarged. {After Metcalf,) dealing career. This makes the total period of development of the fly about ten days in warm weather. Under very favorable conditions as regards heat, moisture and filth, they may even develop in eight days. Flies do not grow after passing the pupa stage. Little flies sometimes observed are of a different kind from the ordinary houseflies. flies' habits of eating. Immediately after hatching into a full grown fly, his first impulse is to feed. He usually gets his initial meal right at his birth palce. He is never particular about the kind of food he eats. It matters little to him if it is manure, garbage, human excrement or something else. He rarely establishes permanent quarters, however, at his birthplace. Shortly after birth he takes his initial flight to some near-by kitchen or dining room. Should screens at the windows and doors embarrass him, he is very willing to take a few meals at the open garbage pail while waiting his chance to get into the house. Flies are prodigious eaters. They have been known to devour nearly half their weight of food at a time. Furthermore, they like to eat at very brief intervals during daylight hours. And here follows one of the most dangerous, as well as nauseating features about flies. Their digestive processes are extremely simple and the food they eat passes through their bodies with the greatest facility. Many substances eaten by flies pass through their digestive tracts unchanged by their weak digestive fluid. As a result, after a fly has dined on tuberculosis sputum or typhoid dejecta, analyses of the resulting fly-specks show the presence of the live germs of these diseases. As might be expected, since flies are great feeders they deposit correspondingly large quantities of excreta. A single fly confined in a paper box has been found to produce fifty fly-specks in the course of twenty-four hours. The reason even more fly-specks are not visible is that they are largely liquid and frequently almost colorless. Many authorities now believe that there is far more danger from disease germs that pass through flies' bodies than from those that are entangled on their feet and legs. |
Digital Format | JPEG 2000 |
Print / Download PDF Version | http://archives.hsl.unc.edu/nchh/nchh-03/nchh-03-027.pdf |
Document Sort | all; group-b; nchh-03 |
Article Title | Essential Facts about Flies |
Article Author | Booker, Warren H. |
Volume Link | http://dc.lib.unc.edu/cdm/search/collection/nchh/field/identi/searchterm/NCHH-03-027 |
Title Link | http://dc.lib.unc.edu/cdm/search/collection/nchh/field/documa/searchterm/NCHH-03 |
Catalog Record link | http://search.lib.unc.edu/search?R=UNCb1324480 |
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