Beginners' zoology . seudopod;ps , pseudopod forming; ectoplasm pro-trudes and endoplasm flows into it. Note the central portionand the slender prolonga-tions or psciidopods (Greek,false feet). Does the endoplasm extend into the pseudo-pods .-• (Fig. 10.) Are the pseudopods arranged with anyregularity .-* Sometimes it is possible to see a denser appearmg por-tion, called the nucleus; also a clear space, the contractilevacuole {¥\g. lo). Movements. — Sometimes while the pseudopods are be-ing extended and contracted, the central portion remains in the same place (this is mo-tioii). Usually only

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Beginners' zoology . seudopod;ps , pseudopod forming; ectoplasm pro-trudes and endoplasm flows into it. Note the central portionand the slender prolonga-tions or psciidopods (Greek,false feet). Does the endoplasm extend into the pseudo-pods .-• (Fig. 10.) Are the pseudopods arranged with anyregularity .-* Sometimes it is possible to see a denser appearmg por-tion, called the nucleus; also a clear space, the contractilevacuole {¥\g. lo). Movements. — Sometimes while the pseudopods are be-ing extended and contracted, the central portion remains in the same place (this is mo-tioii). Usually only one pseudo-pod is extended, and the bodyflows into it; this is locomotion(Fig. 11). There is a new footmade for each —If the amceba crawls near a food particle, thepseiidopod is pressed against it, or a depression occurs (), and the particle is soon embedded in the a clear space called 3. food vacuole is noticed aroundthe food particle. This is the water that is taken in with. Fig. 11.—The same amoeba seenat different times. 12 BEGINNERS ZOOLOGY

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Keywords: ., bookcentury1900, bookdecade1920, booksubjectzoology, bookyear1921