Packard.] 340 [Maya, 
"These central and side ducts run down to that part of the tongue 
where the spoon, orbouton {b, Plate II; K, Plate III), is placed. This is 
provided with very delicate split hairs (£", Fig. 25), capable of brushing 
up the most minute quantity of nectar, which by capillarity, is at once 
transferred by the gathering hairs (which are here numerous, long, and 
thin) to two side groove-lilie foimis at the back of the bouton, and which 
are really tlie opened out extremity of the centre and side ducts, assuming, 
immediately above the bouton, the form seen in F, Plate III. The 
central duct, which is only from oio i"- *o foVo ^^- ^^ diameter, because 
of its smaller size, and so greater capillary attraction, receives the nectar, 
if insufficient in quantity to fill the side ducts. But good honey-yielding 
plants would bring both centre and side ducts into requisition. The 
nectar is sucked up until it reaches the paraglossae (jig, iJ, Plate III), 
which are plate-like in front, but membranous extensions, like small 
aprons, behind; and by these the nectar reaches the front of the 
tongue, to be sAvallowed as before described." 
s.d^ oe 
Fig. 24. Longitudinal section through the head of the honey bee ? , 
just outside of right antenna; ant, antenna with three muscles attached 
to mes, mesocephalic pillar; cl, clypeus; Ibr, labrum; 1, chyle gland 
(system no. 1, of Siebold) ; o, opening of the same; oc, ocellus ; br, brain ; 
n, neck; th, thorax; oe, oesophagus; sd'^^, common salivary ducts of 
systems 2 and 3; sv, salivary valve; c, cardo; ph, pharynx; mx', labium ; 
mx.'p, labial palpi; m«, mentura; mx, maxilla; ?iyp, hypopharynx; s, 
bouton. — Aftei- Cheshire. 
Cheshire then settles the question which has been in dispute 
since the time of Swammerdam, whether the bee's tongue is 
solid or tubular. He agrees with Wolff that the duct is a trough 
and not a tube, and proves it by a satisfactory experiment. 
He remarks : 
"Bees have the power, by driving blood into the tongue, of 
forcing the rod out from the sheath, and distending the Avrinkled 
