. The biology of the Protozoa. Protozoa; Protozoa. B Fig. 80. — .4, Onychaspis sp.; B, Onychaspis hcxeris. (Original.). In some cases cirri are said to be differentiated as tactile organs, especially the more dorsal ones of certain Hypotrichida. It is probable that such cirri are no different from other motile organs of the ciliates in this respect, extreme irritability being a common characteristic. Few observers can have failed to note the instan- taneous effect of a slight local irritation on a quietly resting Fleiiro- nema chrysalis, for example, with its long cilia radiating out in all di
. The biology of the Protozoa. Protozoa; Protozoa. B Fig. 80. — .4, Onychaspis sp.; B, Onychaspis hcxeris. (Original.). In some cases cirri are said to be differentiated as tactile organs, especially the more dorsal ones of certain Hypotrichida. It is probable that such cirri are no different from other motile organs of the ciliates in this respect, extreme irritability being a common characteristic. Few observers can have failed to note the instan- taneous effect of a slight local irritation on a quietly resting Fleiiro- nema chrysalis, for example, with its long cilia radiating out in all directions, yet there are no cirri here. The synchronous and metachronous vibrations of cilia and cilia aggregates, are probably regulated by coordinating fibers with highl\' de\eloped irritability. This is the interpretation given by Schuberg to the basal fibrils in the contractile zone of Paramecium cavdatini'.; by Nerescheimer (1903) to certain fibers distinct from the myonemes in Stentor ccerideus, and by Sharp, Yocom, Taylor. 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 Calkins, Gary N. (Gary Nathan), b. 1869. Philadelphia, New York, Lea & Febiger
Size: 1268px × 1970px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorcalkinsgaryngarynatha, bookcentury1900, bookdecade1920
