. The microscope and its revelations. face ; and above by an epiderm (6, b) formed of asingle layer of cells ; whilst its interior is occupied by a looselyarranged parenchyme composed of branching rows of cells (f, f) thatseem to spring from the floor, these cells being what are seen fromabove when the observer looks down through the central apertureA just mentioned. If the vertical section should happen to traverseone of the peculiar bodies whichoccupy the centres of the divi-sions, it will bring into view astructure of remarkable com-plexity. Each of these stomates(as they are termed, from t
. The microscope and its revelations. face ; and above by an epiderm (6, b) formed of asingle layer of cells ; whilst its interior is occupied by a looselyarranged parenchyme composed of branching rows of cells (f, f) thatseem to spring from the floor, these cells being what are seen fromabove when the observer looks down through the central apertureA just mentioned. If the vertical section should happen to traverseone of the peculiar bodies whichoccupy the centres of the divi-sions, it will bring into view astructure of remarkable com-plexity. Each of these stomates(as they are termed, from the(ireek crrof^a, mouth) forms a sortof shaft (r/), composed of four orfive rings (like the courses ofbricks in a chimney) placed oneupon the other (A), every ring-being made up of four or fivecells; and the lowest of theserings (/) appears to regulate theaperture by the contraction orexpansion of the cells whichcompose it, and is hence termedthe obturator-ring. In thismanner each of the air-chambersof the frond is brought into coin-.
Size: 2009px × 1244px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectmicrosc, bookyear1901
