The distribution of glycogen in the wool follicle is described; its presence, until recently unsuspected, has been demonstrated in the unkeratinized part of the fibre. The deposition of glycogen in the follicle has been investigated by injecting mice with glucose labelled with carbon-14.

The distribution of acid and alkaline phosphatases is described; the former appears to be concentrated in the unkeratinized part of the fibre and the latter in the blood-vessels of the follicle.

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