 In order to obtain an estimate of the bacteria of human origin, which might at times include pathogenic forms, we made all our plates on litmus-lactoseagar, as noted above, and isolated all red colonies which appeared on the plates. It is well established...  The Heating and Ventilating Magazine - Strona 21913Pełny widok - Informacje o książce
 | 1914 - Liczba stron: 940
...left), and by Soper (140 bacteria per cubic foot at remote end of Fulton Street subway station). In order to obtain an estimate of the bacteria of human...The numbers of these organisms in school-room air was found by Prof. Baskerville and myself in preliminary experiments of a year ago to be quite small.... | |
 | United States. Office of Education - 1915 - Liczba stron: 1224
...He says: It is well established that acid-forming streptococci are among the most abundant form* iu the human mouth, while they are absent from sources...or animal pollution. The numbers of these organisms iu ^ schoolroom air were found by Prof. Baskerville and myself in preliminary experiments a year ago... | |
 | John Rankin McLure - 1924 - Liczba stron: 152
...demonstrable to science. Other workers repeated these *« "It Is well established that acid-forming streptococci are among the most abundant forms in...recently been exposed to human or animal pollution." — Baskerville. " Baskerville, Charles. "Investigations of School Air in New York City," The Journal... | |
 | 1915 - Liczba stron: 912
...acidforming streptococci in New York City schools. He says: It is well established that acid-forming streptococci are among the most abundant forms in...preliminary experiments a year ago to be quite small. \Ve then found among 30.000 colonies isolated from 750 plates, exposed in schools with window ventilation,... | |
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