Annual report of the Commissioner of Health of the Commonwealth of Pennsylvania. 1914 v. 1

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Harrisburg Publishing Company, 1916

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Seite 90 - Meeting of the Conference of State and Provincial Boards of Health of North America will be held in Detroit, Michigan, August 9, 10, and n, 1898. The " Quarter- Centennial Celebration of the Establishment of the Michigan State Board of Health " will be in progress at the above named time.
Seite 341 - An imbecile is : One who, by reason of mental defect existing from birth, or from an early age, is incapable of earning his own living, but is capable of guarding himself against common physical dangers.
Seite 308 - Some of the layers are sparingly crinoidal, but with crinoid stems or segments of stems of small diameter. The lowest layer of the Brassfield bed includes numerous rounded, black pebbles and grains, possibly phosphatic, varying in size from an eighth to a quarter of an inch; a few equal even as much as an inch in diameter. Immediately below, the top of the Ordovician is exposed. The upper part of the Brassfield bed exposure contains the following fossils: Orthis flabellilcx.
Seite 309 - I injected a weak solution of novocaiu and removed from the left eyebrow a somewhat isolated friable tubercule fully half an inch long and a quarter of an inch broad and a similar tubercle fully an eighth of an inch in diameter from behind the right ear.
Seite 119 - ... bottom of the glass tube, a striking difference is found between them. The eggs richly supplied with oxygen contain a much larger percentage of mature dead and black eggs than those kept in the lack of oxygen. In the latter the living immature eggs are in the majority, and a part of these maturate when spread out in a thin layer over the bottom of a vessel. These experiments are also well adapted to show that the rapid death of the mature unfertilized sea-urchin eggs is determined through internal...
Seite 147 - ... resisting powers through its living tissue cells, and upon its environment. In other words, this quality of natural or acquired immunity may hold the infection dormant; may heal an active lesion in its incipiency, or localize it in the glands or bones; or may give way with resulting meningeal, miliary, or pulmonary involvement. The course of events which supervenes, is dependent largely on extraneous circumstances, on the amount...
Seite 121 - For some years I have been using ducks to keep down mosquitoes In swamps that would have been very expensive to drain, but I never fully appreciated the high degree of efficiency of the duck as a destroyer of mosquito life until the foregoing test was made.
Seite 146 - Finally, as a corollary, adults are very little endangered by close contact with open tuberculosis, and not at all in ordinary association. Childhood is the time of infection, youth the time of superinfection, and that from extension of the primary disease.
Seite 196 - ... at a meeting of the Board held on the evening of the same day. In response to an appeal to the State Department of Health the Associate Chief Medical Inspector, Mr.
Seite 120 - They, however, soon recognized the presence of larvae and pupae of the mosquito and Immediately turned their attention to these, ravenously devouring them in preference to any other foodstuffs present. At the end of 24 hours no pupae were to be found and in 48 hours only a few small larvae survived.

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