. The biology of Stentor. Stentor. 236 THE BIOLOGY OF STENTOR creased without much affecting the frequency of beat. The general picture, then, is not of a row of effectors joined by one connecting nerve or neuroid process, but of a series of triggers which fire each other in succession. CiUu-m of mem ciliary roots ot 2)asBl lamella bsLSaL fiber Fig. 68. Diagram of a theory of metachronal coordination. (After Sleigh, 1957.) This would leave the basal fiber without defined function, and Sleigh does not even mention it. Apparently he regards the conduc- tion as simply spreading through
. The biology of Stentor. Stentor. 236 THE BIOLOGY OF STENTOR creased without much affecting the frequency of beat. The general picture, then, is not of a row of effectors joined by one connecting nerve or neuroid process, but of a series of triggers which fire each other in succession. CiUu-m of mem ciliary roots ot 2)asBl lamella bsLSaL fiber Fig. 68. Diagram of a theory of metachronal coordination. (After Sleigh, 1957.) This would leave the basal fiber without defined function, and Sleigh does not even mention it. Apparently he regards the conduc- tion as simply spreading through the ectoplasm between the membranelles. That such transmission without fibrous connections is possible even at much wider dimensions is indicated by the membranellar response of grafted stentors. Immediately after many stentors were grafted together, and even if the membranellar bands are cut into sections of various lengths, all the membranelles in the mass were observed to stop and start together as the cilia simul- taneously reversed or beat " forward ", long before any intimate structural reconnections could have been made, as if a coordinating. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Tartar, Vance, 1911-. New York, Pergammon Press
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