Microbiology of Textile Fibres

Abstract

1. As measured by means of bacterial counts on nutrient agar plates, there was no increase in the number of molds in a single series of samples incubated at relaat relative humidities of 70 to 95% at 25° C.

2. As measured by means of plate counts on Czapek's solution agar, there was a marked increase in the number of molds in a single series of samples incubated at relative humidities of 82 to 95%.

3. Of the many varied types present in the original myco-flora of the samples, only the Penicillia and Aspergilli grew over the range of humidities from 82 to 95% as evidenced by counts on Czapek's solution. agar. A single exception was noted in. the case of the sample incubated at 95% B.H., a large number of Actinomycetes being observed on nutrient agar plates made for counting bacterial flora.