Public Documents of Massachusetts, 4권1897 |
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71개의 결과 중 1 - 5개
429 페이지
... bacteria , and hence if it were applied directly to filtration areas the bacterial actions , which cause the puri- fication of sewage and upon which the life and value of a sewage filter depend , could not take place . A considerable ...
... bacteria , and hence if it were applied directly to filtration areas the bacterial actions , which cause the puri- fication of sewage and upon which the life and value of a sewage filter depend , could not take place . A considerable ...
431 페이지
... of this filter has been to free the sewage of germicides and thus get it into such a con- dition that the organic matter can be attacked by the bacteria of May ,. June , July ,. August , September , No. 34. ] 431 FILTRATION OF SEWAGE .
... of this filter has been to free the sewage of germicides and thus get it into such a con- dition that the organic matter can be attacked by the bacteria of May ,. June , July ,. August , September , No. 34. ] 431 FILTRATION OF SEWAGE .
432 페이지
... bacteria per cubic centimeter were found growing in it , its effluent has contained several million per cubic ... Bacteria per Cubic meter . Centi- Cubic Centi- Bacteria per meter . DATE 1896 . Effluent of Filler No. 73 . [ 432 [ Pub ...
... bacteria per cubic centimeter were found growing in it , its effluent has contained several million per cubic ... Bacteria per Cubic meter . Centi- Cubic Centi- Bacteria per meter . DATE 1896 . Effluent of Filler No. 73 . [ 432 [ Pub ...
433 페이지
... Bacterial Analyses of the Sewage applied to and Effluents of Filters Nos . 71 , 72 and 73 . [ Bacteria per Cubic Centimeter in Sewage and Effluents . ] MONTH - 1896 . Sewage for Filters EFFLUENT OF FILTERS Nos . Nos . 71 and 72 . 71 ...
... Bacterial Analyses of the Sewage applied to and Effluents of Filters Nos . 71 , 72 and 73 . [ Bacteria per Cubic Centimeter in Sewage and Effluents . ] MONTH - 1896 . Sewage for Filters EFFLUENT OF FILTERS Nos . Nos . 71 and 72 . 71 ...
434 페이지
... bacterial action , and the large amount of organic matter present is in an advanced state of decomposition and hence readily attacked by the bacteria in a filter . The sludge is at times great in volume as compared with the sludge of ...
... bacterial action , and the large amount of organic matter present is in an advanced state of decomposition and hence readily attacked by the bacteria in a filter . The sludge is at times great in volume as compared with the sludge of ...
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자주 나오는 단어 및 구문
acre daily Albuminoid Algæ AMMONIA analyses of 1896 Antitoxin APPEARANCE applied Asterionella bacilli Bacteria Bacteria per Cubic Board of Health Board replied BOSTON Brook cent Chemical Examination Chlorine clayey Color Cons Crustacea cubic centimeter cubic centimeter found Date of Collection Day of examination Diatomaceæ Dinobryon diphtheria Distinct distinctly vegetable earthy effluent Euglena Examination of Water faintly vegetable faucet feet filtration gallons per acre inches Infusoria insignificant number July July 27 Melosira Merrimack River Microscopical Examination milky minoid mouldy Nitrites NITROGEN NITROGEN AS Albuminoid NOTE to analyses number of bacteria number of organisms Number of sample Odor organisms per cubic Oxygen Consumed Peridinium Pond Protococcus pumping station Raphidium reservoir RESIDUE ON EVAPORA Rhizopoda River Rotifer sample was collected samples were collected sand Sediment Sept sewage sewer Slight SUDBURY RIVER surface Synedra Tabellaria TION town Trachelomonas Turbidity V.slight Vermes water supply Zoöglæa
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xlviii 페이지 - Resolved, That there be allowed and paid out of the treasury of the Commonwealth a sum not exceeding one thousand dollars, to be expended...
xlii 페이지 - The following summary gives the results of the replies to the second question, relative to its comparative prevalence in the five years (1890-94) : — Total Reported Cases, by Years. Prevalence, by Towns (1890-94). Nearly ninety per cent, of the reported cases occurred during the months of May, June, July, August, September and October. In regard to the condition of the land near the river, Dr.
lxiv 페이지 - ... in the valley, which have been from time to time collected, indicate a general belief on the part of the medical profession that the conditions affecting health here are more unfavorable than they formerly were. The valley of the Neponset River has twice before been the subject of extended examinations by the State authorities, — first by the State Board of Health in 1875, and subsequently by the Massachusetts Drainage Commission in 1885. In addition to these examinations, a description of...
835 페이지 - In each city and town having a population of more than five thousand inhabitants, as determined by the last census, at least one member of said board shall be a physician, and the board shall send an annual report of the deaths in such town to the state board of health.
15 페이지 - ... and shall receive a certificate thereof as provided in section three. Any person refused registration may be re-examined at any regular meeting of said board, within two years of the time of such refusal, without additional fee, and thereafter...
15 페이지 - Examinations may be made in whole, or in part in writing, and shall be, of an elementary and practical character, but sufficiently strict to test the qualifications of the candidate as a practitioner.
9 페이지 - Health regarding the establishment of systems of water supply, drainage and sewerage," the Board is required "from time to time to consult with and advise the authorities of cities and towns, or with corporations, firms or individuals either already having or intending to introduce systems of water supply, drainage or sewerage, as to the most appropriate source of supply, the best practicable method of assuring the purity thereof or of disposing of their...
872 페이지 - There were 27 deaths from measles during the year. The number of deaths of children under five years of age was 4,055, compared with 3,935 for the previous year, showing an increase of 120 deaths.
480 페이지 - No. 66 has been applied to Filter No. 67, containing 5 feet in depth of sand of an effective size of 0.19 millimeter. The average rate of filtration obtained by this filter has been 608,500 gallons per acre daily. As Filter No. 66 is of twice the area of Filter No. 67, the rate for the combined area has been 203,000 gallons per acre daily. This rate has been maintained with difficulty, tho surface of No.