. Manuale di natura-studio per insegnanti e genitori, basato sulla natura di Cornell-studio di volantini. Lo studio della natura. Studio di insetto 4S3. Industrie dell'alveare e l'osservazione alveare di insegnante di storia EE-hivesare le case di cui l uomo fornisce per le colonie, le api selvatiche ordinariamente vivono in cavità di alberi o in grotte. L'alveare di solito è costituito da una scatola che è la storia di inferiore e di uno o più piani superiori, chiamato "supers." Nel piano inferiore sono collocati i fotogrammi per l' della covata e per immagazzinare miele per uso invernale delle api. In supers sono collocate le sezioni ciascuna delle quali

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. Handbook of nature-study for teachers and parents, based on the Cornell nature-study leaflets. Nature study. Insect Study 4S3. INDUSTRIES OF THE HIVE AND THE OBSERVATION HIVE Teacher's Story EE-hivesare the houses which man furnishes for the bee colonies, the wild bees ordinarily living in hollow trees or in caves. The usual hive consists of a box which is the lower story and of one or more upper stories, called "supers." In the lower story are placed frames for the' brood and for storing the honey for the winter use of the bees. In the supers are placed the sections, each of which is planned to hold a pound of honey. It is the habit of the bees to place their brood in the lower part of their nests and store honey in the upper portions. The bee-keepers have taken advantage of this habit of the bees and remove the supers with their filled sections and replace them with others to be filled, and thus get a large crop of honey. The number of bees in a colony varies; there should be at least 40, 000 in a healthy colony. Of these a large proportion are workers; there may be a few hundred drones the latter part of the season but only one queen. Honey-comb is built of wax and is hung from the frame so that the cells are horizontal; its purpose is to cradle the young and for the storage of pollen and honey. The wax used for building the comb is a secretion of the bees; when comb is needed, a number of self-elected bee citizens gorge themselves with honey and hang themselves up in a curtain, each bee reaching up with her fore feet and taking hold of the hind feet of the one above her. After remaining thus for some time the wax appears in little plates, one on each side of the second, third, fourth and fifth segments of the abdo- men. This wax is chewed by the bees and made into comb. Honey is made from the nectar of flowers which the bee takes into her honey stom- ach. This, by the way, is not the true stomach of the bee and has nothing to do with digestion. It is s

Parole chiave associate all'immagine

• bookcentury1900
• bookdecade1910