. The microscope and its revelations. f trunk that soon divides into brancheswhich again speedily multiply by further subdivision, until at lasta multitude of finer and yet finer threads are spun out by whosecontinual inosculations a complicated network is produced, whichmay be likened to an animated spiders web. The protoplasm isinvested in a very delicate and closely applied envelope. Any smallalimentary particles that may come into contact with the glutinoussurface of the pseudopodia are retained in adhesion by it, andspeedily partake of the general movement going on in their sub-stance. Th
. The microscope and its revelations. f trunk that soon divides into brancheswhich again speedily multiply by further subdivision, until at lasta multitude of finer and yet finer threads are spun out by whosecontinual inosculations a complicated network is produced, whichmay be likened to an animated spiders web. The protoplasm isinvested in a very delicate and closely applied envelope. Any smallalimentary particles that may come into contact with the glutinoussurface of the pseudopodia are retained in adhesion by it, andspeedily partake of the general movement going on in their sub-stance. This movement takes place in two principal directions—from the body towards the extremities of the pseudopodia, and from these extremities back to thebody again. In the largerbranches a double current maybe seen, two streams passingat the same time in oppositedirections; but in the finestfilaments the current is singleand a granule may be seen tomove in one of them to its veryextremity, and then to return,perhaps meeting and carrying. with granule wasopposite seen advancing direction. that in theEven in FIG. 570.—Lieberkuehnia Wagenerl. the broader processes granulesare sometimes observed to cometo a stand, to oscillate for atime, and then to take a retro-grade course, as if they hadbeen entangled in the opposingcurrent, just as is often to beseen in Cham. When a granulearrives at a point where a fila-ment bifurcates, it is often arrested for a time, until drawn into oneor the other current; and when carried across one of the bridge-like connections into a different band, it not unfrequently meets acurrent proceeding in the opposite direction, and is thus carried backto the body without having proceeded very far from it. Thepseudopodial network along which this cyclosis takes place is con-tinually undergoing changes in its own arrangement, new filamentsbeing put forth in different directions, sometimes from its margin,sometimes from the midst of its ramifications, whilst othe
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectmicrosc, bookyear1901
