The relation between moisture content and moulding in cured hay.
Samples of cured hay have been stored in closed containers at relative humidities of 0–95% at temperatures varying from 5 to 25° C. A curve relating equilibrium moisture content to relative humidity of the store has been constructed and the incidence of first mould growth noted. An explanation has been suggested to account for the apparent discrepancy between earlier published work concerning the onset of moulding and conditions normally prevailing on the farm. In laboratory storage experiments temperature conditions are relatively constant, whereas with hay stacked in the open air the high atmospheric humidity in winter is offset by a lowered temperature, and the higher summer temperature is accompanied by a lower moisture content in the hay.
Mould deterioration of feeding‐stuffs in relation to humidity of storage: Part I. The growth of moulds at low humidities
The literature relating to the growth of moulds at different humidities is surveyed. 
 
 
 
Observations were made on the development of mould growth on six widely different types of feeding-stuffs for storage periods extending over some 3 1/2 years. The main factors controlling mould growth were found to be: 
 
 
 
1. The relative humidity rather than the moisture content of the food. 
 
 
 
2. The length of the storage period. Mould growth took place relatively quickly on all feeding-stuffs stored at 100-75% R-H. Below 75% R.H. mould growth, while not prevented, only developed after a very prolonged latent period. Mould development was observed on locust beans exposed to a humidity as low as 65 % after a latent period of over 2 years. 
 
 
 
3. The balance and type of nutrients provided by the various feeding-stuffs was shown to influence the latent period as well as the extent of mould deterioration. This was confirmed by experiments on artificially dried grass fractions and by experiments on starch, protein and fibre mixtures. 
 
 
 
4. The temperature of storage was found to affect the rate of mould development; mould growth developed sooner on samples stored at 22dC. than at 15.5dC. 
 
 
 
5. The type of mould species present. At high humidities all mould species grew rapidly: at low humidities, only a few types were capable of growth.
Enumeration of total coliforms, fecal coliforms, and Escherichia coli in foods by hydrophobic grid membrane filter: supplementary report.
Raw, comminuted poultry meat was used to determine the specificity of the media and incubation conditions used in the hydrophobic grid membrane filter method. Confirmation rates for target colonies were 100% for total coliforms, 98% for fecal coliforms, and 97-99% for Escherichia coli. The results of total coliform enumeration in 30 pasteurized milk samples by both the hydrophobic grid membrane filter method and AOAC method 46.013-46.016 are also reported.