By examinations of the proportion between the amount of antitryptic-acting bodies in the blood of goats and their newborn kids, the titers of the kids were in all cases found to be higher than those of the mother animals.

The titers of the mother animal as a rule increase before parturition.

There seems to be some connection between the growth of the kids and the antitryptic-acting power of the blood, so that the titer of the kid decreases when it thrives badly, and increases when it thrives well, which would agree with the supposition set forth by previous experimentators, that the antitryptic action is connected with a fat or lipoid effect.

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