. Biological lectures delivered at the Marine Biological Laboratory of Wood's Holl [sic]. Biology. NUCLEAR DIVISION IN PROTOZOA. 217 jority of the Flagellata, and may, perhaps, be regarded as the usual condition of protozoan nuclei. Among some Flagellata the aggregation of chromatin granules about the sphere, al- though permanent throughout resting and active phases, resem- bles the loose aggregation of the division period of Tetramitns in having no nuclear membrane {CJiilomonas paranioeciiini, TracJielonionas lagenella, and T. hispidd). In other cases, how- ever, a nuclear membrane is present
. Biological lectures delivered at the Marine Biological Laboratory of Wood's Holl [sic]. Biology. NUCLEAR DIVISION IN PROTOZOA. 217 jority of the Flagellata, and may, perhaps, be regarded as the usual condition of protozoan nuclei. Among some Flagellata the aggregation of chromatin granules about the sphere, al- though permanent throughout resting and active phases, resem- bles the loose aggregation of the division period of Tetramitns in having no nuclear membrane {CJiilomonas paranioeciiini, TracJielonionas lagenella, and T. hispidd). In other cases, how- ever, a nuclear membrane is present either as a faint and extremely delicate outline {Synura) or as a well-defined mem- brane [Englena, Phacus, etc.). In the latter forms, 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 Marine Biological Laboratory (Woods Hole, Mass. ). Boston, Ginn & Co
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