. Animate creation : popular edition of "Our living world" : a natural history. Zoology; Zoology. VARIATION IN FORM. 371 other trees which dip tho extremities of their branches into the water. I have seen the tim- bers of locks quite encrusted with the Alcyonella in many places. \\Tien carefully removed and placed in fresh water, it gradually develops a kind of white downy appearance over its entire surface, which disappears with the rapidity of magic if a hand is moved quickly over the vessel in which it is lying. This downy appearance is caused by the tentacles which protrude thems
. Animate creation : popular edition of "Our living world" : a natural history. Zoology; Zoology. VARIATION IN FORM. 371 other trees which dip tho extremities of their branches into the water. I have seen the tim- bers of locks quite encrusted with the Alcyonella in many places. \\Tien carefully removed and placed in fresh water, it gradually develops a kind of white downy appearance over its entire surface, which disappears with the rapidity of magic if a hand is moved quickly over the vessel in which it is lying. This downy appearance is caused by the tentacles which protrude themselves in vast numbers, and instantly retract when the creatures are alanned. Even in swallowing its food, the Plumatella displays considerable powers of discrimina- tion, accepting some particles as they pass over the mouth, and rejecting others as unworthy of reception. Its usual places of abode are under stones, submerged branches, floating leaves, and similar substances. Sometimes it attains a considerable size, spreading over a square foot of surface, and having some branches more than three inches in length. It is ia best condition towards the end of POLYZOA. A. Alcyonella fungdm. B. AlcyoneUa fungisa. x C. AlcyoneUa fungbsa. (Tentacles of a polype.) B. PlmnaleUa repens. E. PtuDuitella repent, x F. PlufJiateUa repens. (Statoblast. x) G. Plujnatella repens. (Statoblast, side view, x) H. FredericeUa sultana, x I. Predericella suUdna. (Statoblast. x) K. Paludicella. L. Paluduxlla. x M. Paludicella. (Tentacles, x) N. Paludicella. (Tentacles, x) O. Paludicella. (Tentacle, x x) The si^ X si^ifles that the object is magnified. A lovely polyzoa is the Fredericella sultana ; the former title being given to it in honor of M. Fr. Cuvier, the celebrated naturalist, and the latter being earned by its graceful and queenly beauty. This is a common species, and is found plentifully in tufts on submerged stones, plants, sticks, and similar objects. It also inhabits rivulets, but s
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Keywords: ., bookauthorbr, bookcentury1800, bookdecade1890, booksubjectzoology
