The animans and man; an elementary textbook of zoology and human physiology (1911) (14782585684)

Identifier: animansmanelemen00kell (find matches)

Title: The animans and man; an elementary textbook of zoology and human physiology

Year: 1911 (1910s)

Authors: Kellogg, Vernon L. (Vernon Lyman), 1867-1937 McCracken, Mary Isabel

Subjects: Zoology Physiology

Publisher: New York, H. Holt and company

Contributing Library: MBLWHOI Library

Digitizing Sponsor: MBLWHOI Library

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hepollen basket. At the flowers some of the bees do notcollect pollen but nectar. Examine the complex tongueof a dead bee. By means of this tongue nectar is suckedor lapped up and swallowed into a crop, where it is notdigested but retained until the bee returns to the hive.By observing the bees there and examining the comb-cellsfind out what is done with the pollen and nectar collectedby the food-gatherers. 432 THE ANIMALS AND MAN Try to observe the making of wax and the building ofcomb in the hive (fig. 221). The process is as follows:after having fed bountifully on honey and pollen from thefood cells a number of bees gather together at the top of thehive and there hang in a mass, usually buzzing the wingsviolently. After a while small drops of liquid wax oozeout on the under side of the body. There are several pairsof small scale-like folds of the skin, called wax plates, onthe under side of the hinder or abdominal body-rings.On these plates the wax spreads out and hardens into tiny

Text Appearing After Image:

FIG. 220. Honeybees gathering pollen and nectar. thin sheets. After some of it has been made by a bee itleaves its wax-making companions and goes to the placewhere a new comb is to be builded or is building. Hereit nips off its wax by means of its hind legs, which are fur-nished with a scissors-like arrangement, and with its broad,trowel-like jaws moulds it on the forming cells. Examinethe wax-shears on the hindmost legs of a dead bee andalso the trowel-like jaws. Make drawings. Watch care-fully the growth of the new comb. Of what shape are thenew cells? Are they all of the same size? Is the bottom MUTUAL AID AND COMMUNAL LIFE 433 of each cell flat? How are those of the two opposite layersof which the comb is composed related to each other ? Note several bees standing in the covered entrance tothe hive and steadily and rapidly vibrating their wings.They are ventilating -that is, making currents of airso that fresh air will constantly flow into the hive and foulair out. Ventilating bee

die tiere und der mensch ein elementares lehrbuch der zoologie und physiologie des menschen 1911 Buchillustrationen Naturgeschichte Medizin Physiologie Zoologie Tiere Blumen Bilder aus dem Internetarchiv

1911

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