Abstract
1. The embryonic rudiment («Anlage») of the maxillary antrum must also in man be regarded as a glandular region. 2. The glands in the neighbourhood of the maxillary antrum rudiment differ from the others, appearing earlier and in larger numbers than anywhere else in the nose. 3. These glands all open out into the maxillary antrum, and a lower conglomeration among them do so through a common efferent duct. 4. The fact that in adults the glands of the maxillary antrum are chiefly ‘to be found near the opening is explained by the position of the embryonal glands at the medial and lower walls. 5. The peculiar relation of the maxillary antrum rudiment and of the glands to the upper jaw makes a transference of a sinusitis to the jaw or the tooth-rudiment respectively not improbable in the infant. 6. The relatively larger glandular apparatus of the nose in earliest youth is useful for the moistening of the relatively larger quantity of air consumed in respiration.

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