Abstract
In the present paper 1. a daily variation of Arakawa's reaction and chlorine content of human milk, 2. a diurnal variation of these and 3. a variation of these during one feeding have been studied. Nozaki1) delivered the first evidence that human milk positive* to Arakawa's reaction is chlorine-poor milk and a “good” milk, and that Arakawa-negative milk is chlorine-rich and a “bad” milk. In my study on these variations above mentioned, Arakawa's reac-tion and chlorine content go reversely parallel to each other, so that if Arakawa's reaction increases in intensity, then chlorine content becomes smaller and vice versa. And so it can be made a general rule that the intensity of Arakawa's reaction in a given case is re-versely proportionate to the figures of chlorine content.
A daily variation of Arakawa's reaction, or of chlorine content is not remarkable, and as to a diurnal variation, Arakawa's reaction is generally better in the afternoon than in the forenoon, or chlorine content is generally larger in the forenoon than in the afternoon.
As to a variation during one feeding, a “post-feeding” portion of milk is richer in chlorine, so that strippings or the last portion of a feeding is a “bad” portion. I say “bad” here, as Nozaki1) has used the word, with a good reason from Troxell's urging (Cf. Para-graph 3). And it maybe an indirect evidence that along feeding will do harm to an infant.
By the way I have made a short report concerning the. chlorine content of human milk in three groups of diseases-l. respiratory cases which have nothing to do with a “bad” milk, 2. eczematous cases which are at least due to a “bad” milk, and 3. cases of infantile preberiberi and infantile beriberi which are due to a “bad” milk. The chlorine content was the smallest in the first group, a larger in the second and the largest in the last group (Cf. Table 5).
And it has thus been shown that human milk rich in chlorine is a “bad” milk and that even a “good” breast can produce a “bad” milk in the last portion of feeding.
