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mal affected with a bacterial disease which causes the clumping of the pathogenic bacteria. Antiseptics are agents which prevent or restrain putrefaction. Disinfectants are agents which restrain infectious diseases by destroying or removing their specific poi- sons. 5. Pneumococcus is a spherical or oval coccus, encap- sulated, non-mobile, non-flagellated, non-sporogenous, non-liquefying, often occurring in pairs, non-chromo- genic, aerobic and optionally anaerobic, staining viagra for performance anxiety readily with aniline dyes and by Gram's method ; its cultural characteristics are variable, some strains growing read- ily on ordinary media, some with difficulty, and some not at all. 6. A sterile swab is rubbed over any visible mem- brane on the tonsils or throat and is then immediately passed over the surface of the serum in a culture tube. The tube of culture, thus inoculated, is placed in an incubator at 37" C. for about twelve hours, when it is September 11, 1915] MEDICAL RECORD. 465 ready for examination. A sterile platinum wire is in- serted into the culture tube, and a number of colonies of a whitish color are removed by it and placed on a clean cover slip and smeared over its surface. The smear is allowed to dry, is passed two or three times through a flame to fi.x the bacteria, and is then covered viagra for performance anxiety for about five or six minutes with a Loeffler's methylene-blue solu- tion. The cover slip is then rinsed in clean water, dried, and mounted. The bacilli of diphtheria appears as short thick rods with rounded ends; irregular forms are characteristic of this bacillus, and the staining will appear pronounced in some parts of the bacilli and defi- cient in other parts. Methods of culture: The bacillus of diphtheria grows upon all the ordinary culture media, and can be readily obtained in pure culture. Loeffler's blood serum, particularly with the addition of a little glucose, is an admirable medium for the rapid growth of this bacillus. The medium should be alkaline and not less than 20° C. The characteristics of the bacillus of diphtheria: The viagra for performance anxiety bacilli are from 2 to 6 mikrons in length and from 0.2 to 1.0 mikron in breadth; are slightly curved, and often have clubbed and rounded ends ; occur either singly or in pairs, or in irregular groups, but do not form chains; they have no flagella, are nonmotile, and aerobic ; they are viagra for performance anxiety noted for their pleomorphism ; they do not stain uniformly, but stain well by Gram's method and very beautifully with Loeffler's alkaline-methylene blue. 7. Difference between an antitoxin and a bacterial vaccine: "The antitoxic sera act directly upon the poison secreted by the living bacterial cell and neutra- lize its toxic property, while the bacteriolytic sera affect the bacteria themselves and destroy them or paralyze their action. Since the antibacterial sera are without effect upon the viagra for performance anxiety formed toxin, they are mainly useful in practice as a means of protecting against the bacterial invasion, while the antitoxic sera (e.g. diph- theria) may be employed to combat an infection al- ready in progress. Broadly speaking, the latter are curative, the former protective." — (Jordan's Bacteri- ology.) Sa])remia is due to absorption of toxins only, and is characterized by a persistent high temperature, re- lieved at once by removing the source of the poison. Septicemia is viagra for performance anxiety due to organisms multiplying in the blood, and characterized by a maintained viagra sample packs high tempera- ture, but not relieved by getting rid of the original source. Pyemia is due to particles of blood-clot carrying or- ganisms to parts distant from the original source, and there setting up abscesses. It is characterized by rig- ors, very high temperature, sweatings, and viagra for performance anxiety big remis- sions of temperature. 8. Bacteria which most frequently cause puerperal fever, are: Streptococcits pyogenes, Staphylococnis pyogenes aureus, gonococcus. Bacillus coli comnniyiis. Bacillus aerogenes capsiilatus. 9. Gram's method of staining: Stain a cover glass preparation for two or three minutes in anilin gentian- violet. Wash in water. Treat with Gram's solution (iodine, 1 gram; potassium iodide, 2 grams; water, 300 c.c.) for a minute and a half, when the preparation be- comes nearly black. Decolorize with strong or abso- lute alcohol for at least five minutes, wash, dry, and mount. Sometimes a contrast stain of Bismarck brown or eosin is used. Tubercle bacillus, diphtheria bacillus, and anthrax bacillus are Gram positive; typhoid bacillus, and gono- coccus are Gram negative. 10. The bacillus of typhoid fever is a short bacillus, with rounded ends, about 1 to 3 microns long by 0.5 to 0.8 micron wide, motile, flagellated, non-sporogenous. aerobic and optionally anaerobic, stains by carbol- fuchsin but not by Gram's method. The Widal reac- tion is obtained with viagra for performance anxiety the typhoid bacillus, a culture of which shows the phenomenon of agglutination or clump- ing upon the addition of dilute serum from a patient with typhoid fever. 11. A pure culture is one that contains only one kind viagra for performance anxiety of microorganism. Five culture media: Gelatin, bouillon, blood serum,