. Experimental morphology. Protoplasm; Growth. 288 INTRODUCTION [Ch. X are summarized in the curve, Fig. 79. This shows how the growth in length of the bacterial rods is delayed at intervals. ; SECOND PERIOD OF MINMrGROWTH,S WHEN 2D CELL DIVISION A WMiil FIRST CELL DIVISION OCCURRED. PERIOD OF MINM. GROVH'H, Fig. 79. — Curve of growth of a bit of a filament of Bacillus ramosus, y- long at the beginning and h at the end of the period of observation. The curve shows certain periods of diminished growth (indicated by the arrows below the curve), which correspond to cell-division. From
. Experimental morphology. Protoplasm; Growth. 288 INTRODUCTION [Ch. X are summarized in the curve, Fig. 79. This shows how the growth in length of the bacterial rods is delayed at intervals. ; SECOND PERIOD OF MINMrGROWTH,S WHEN 2D CELL DIVISION A WMiil FIRST CELL DIVISION OCCURRED. PERIOD OF MINM. GROVH'H, Fig. 79. — Curve of growth of a bit of a filament of Bacillus ramosus, y- long at the beginning and h at the end of the period of observation. The curve shows certain periods of diminished growth (indicated by the arrows below the curve), which correspond to cell-division. From Wakd ('95, p. 300). by the nuclear divisions and the accompanying formation of transverse septa.* The course of, normal growth may now be studied in * Attention may here be called to aphenomenon which has repeatedly been observed when a. single growing mammal has been weighed at regular intervals. This is a sort of alternation of periods of unusually rapid growth with periods of diminished growth, the Interval being a day or two. There is an irregu- larity in the length of these periods. See Saint- Loup, ' ; compare also MiNOT, '91, Table XIV. 20 MM. ^ -- :o MM. / Fig. 80. — Curve of length of shell of Lymnsea atagnalis at intervals from hatching up to 85 days. From Sempee, Animal Life, p. 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 Davenport, Charles Benedict, 1866-1944. New York, The Macmillan company; London, Macmillan & co. , ltd.
Size: 2104px × 1188px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookpublishernewyo, bookyear1897
