Abstract
Though it is regretable that I was not able to use the really Arakawa-positive milk in most cases, yet the present work has shown that there is still a remarkable difference between the (somewhat weakly) Arakawa-positive milk and the Arakawa-negative milk in the influence on white rats fed on B1-avitaminotic diet. I performed 5 series of experiments.
1. In each series the survival was always longer in the Arakawa-positive group than in the Arakawa-negative group.
2. About half the number of the rats of the Arakawa-negative group suffered from diarrhoea, while no rat of the Arakawa-positive group developed diarrhoea.
3. The Arakawa-negative group developed paresis of the extremities about 8 days earlier than the Arakawa-positive group.
4. The number of days which elapsed before a prolongation of the shortest peroxidase stain-time occurred for the first time, was the smallest in the controls. Between the Arakawa-positive and -negative groups, it was generally shorter in the Arakawa-negative group than in the Arakawa-positive group. There was not a single case with the shortest stain-time of 9 seconds in the Arakawa-positive group.
