. The bee-keeper's guide; or, Manual of the apiary. Bees. 136 thb bbb-kbbpbr's guibb; so intimately connected with the mouth organs, are so evi- dently useful .in digestion, and are so well developed in the worker-bees, that they deserve full consideration. All the glands have a chitinous inner intivna and outer propria, and a middle epithelial membrane. The spinning gland of the larval bee is a simple tubular gland, and is well illustrated by Schiemenz {Fig. S8). On each side within the head of the worker-bee (Fig. 59; u h g) are large glands, discovered by Meckel in 1846, and fully described
. The bee-keeper's guide; or, Manual of the apiary. Bees. 136 thb bbb-kbbpbr's guibb; so intimately connected with the mouth organs, are so evi- dently useful .in digestion, and are so well developed in the worker-bees, that they deserve full consideration. All the glands have a chitinous inner intivna and outer propria, and a middle epithelial membrane. The spinning gland of the larval bee is a simple tubular gland, and is well illustrated by Schiemenz {Fig. S8). On each side within the head of the worker-bee (Fig. 59; u h g) are large glands, discovered by Meckel in 1846, and fully described by Siebold in 1870, which are very rudimentary in the queen and entirely absent in the drone. They are often called the lower head-glands. These are in form of the meibomian Fig. Cross section of Tongue in use, after Cowan. 11 Labial palpi. o o Tube for sucking the nectar. m m Maxillse. p Overlapping maxillae. glands in our own eyelids ; that is, a long duct bears many follicles rich with secreting cells, the whole looking like a compound leaf with small leaflets. Dr. Packard says each follicle is unicellular. While all the others are acinose. The ducts empty on the floor of the mouth. These glands are very marked in nurse-bees, but smaller in aged bees. Schiemenz believes that these glands secrete the food for the larval bees and also for the laying queen. Their large size, their full development only in the nurse-bees, and their entire absence in queen and drones, surely seem to give great force to this view. As already stated, the queen-larva is fed very liberally, and almost exclusively, of this so-called bee-milk. Berlepsch says that the little pollen sometimes (?) found in the digestive tube of the queen-larva is accidental. The worker-larva re- ceives less of this secretion, and to that fed to the drone is. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these
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Keywords: ., bo, bookcentury1900, bookdecade1900, booksubjectbees, bookyear1904
