HISTOLOGICAL NOTES. 
479 
puscles may be met with, similar to what has been noticed 
by Boll and Lavdowsky in the salivary glands. 
Fine threads, some with nuclei, some without, can be 
traced in connection apparently with the cells of the intra- 
lobular ducts and with those of the alveoli. But whether 
they are nerve-fibres, as seems probable, or not, could not be 
definitely ascertained. 
An interesting fact, observed here in connection with the 
large serous gland, is the presence of thin, unstriped muscle 
cells running in all directions, and forming a plexus, in 
whose meshes the gland-alveoli are situated. In some 
places, e. g, the conchse, there exists here also a plexus of 
large veins, and the above muscle-bundles form the stroma, 
as it were, for them, and thus a certain resemblance with a 
cavernous tissue is produced. This muscular tissue is, no 
doubt, of some service for the discharge of the secretion, 
seeing their peculiar intimate relation to the gland -alveoli. 
In the relatively rigid walls of the nasal cavity such inter- 
stitial muscle-tissue must be of special value to the glands. 
