A text-book of entomology, including the anatomy, physiology, embryology and metamorphoses of insects, for use in agricultural and technical schools and colleges as well as by the working entomologist . mbrane. //, same as (?, but magnifiedtwo hundred times, and with jitn. plaited membrane, turned outwards ; //. closiiir hairs ; //, blood ; ti, nucleus; r, rod ; h, closing hairs. /, small portion of the sheath ; lettering asbefore. K, extremity of the tongue, with spoon ; b, branching hairs for gathering. — After Cheshire. 82 TEXT-BOOK OF ENTOMOLOGY extensions, like small aprons, behind ; and
A text-book of entomology, including the anatomy, physiology, embryology and metamorphoses of insects, for use in agricultural and technical schools and colleges as well as by the working entomologist . mbrane. //, same as (?, but magnifiedtwo hundred times, and with jitn. plaited membrane, turned outwards ; //. closiiir hairs ; //, blood ; ti, nucleus; r, rod ; h, closing hairs. /, small portion of the sheath ; lettering asbefore. K, extremity of the tongue, with spoon ; b, branching hairs for gathering. — After Cheshire. 82 TEXT-BOOK OF ENTOMOLOGY extensions, like small aprons, behind ; and by these the nectar reaches the frontof the tongue, to be swallowed as before described. Cheshire then settles the question which has been in dispute sincethe time of Swammerdam, whether the bees tongue is solid or tubu-lar. He agrees with Wolff that the duct is a trough and not atube, and proves it by a satisfactory experiment. He remarks: Bees have the power, by driving blood into the tongue, of forcing the rodout from the sheath, and distending the wrinkled membrane so that in sectionit appears as at H, Fig. 86, the membrane assuming the form of a pouch, given ant br. 06 FIG. 87. —Longitudinal section through the head of the honey bee, 9. just outside of rip-lit an-tenna: in/t, antenna with three muscles attached to mes, mesocephalic pillar; cl, clypeus ; Ibr,lahruin ; 1, chyle-gland (system no. 1, of Siebold) ; o, opening of the same; oc, ocellus ; ///•, brain ;n, neck ; th, thorax ; oe, (esophagus ; ., , common salivary ducts of systems ~2 and ., ; /•, sali-vary valve ; c, cardo ; ph, pharynx ; mx, labium ; mx. p, labial palpi ; mt, mentum ; mx, maxilla ; >, hypopharynx ; s, boutou. — After Cheshire. in full length at A. It will be seen at once that this disposition of parts abol-ishes the side ducts, but brings the central duct to the external surface. Theobject of this curious capability on the part of the bee is, in my opinion, topermit of cleaning
Size: 2301px × 1086px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookpublishe, booksubjectinsects
