Les Quanta: Par Georges Déjardin, Professeur a la Faculté des Sciences de Lyon. 224 pages, illustrations, 16mo. Paris, Librairie Armand Colin, 1930. Price ten francs 50
✍ Scribed by Lucien E. Picolet
- Book ID
- 104128349
- Publisher
- Elsevier Science
- Year
- 1931
- Tongue
- English
- Weight
- 61 KB
- Volume
- 212
- Category
- Article
- ISSN
- 0016-0032
No coin nor oath required. For personal study only.
✦ Synopsis
written a clear story of facts so simple that they still escape the understanding of intense research. How the tiny chloroplasts perform is omitted from the engaging story of plant life for the well known reason that no one yet knows this secret. A great deal is told, however, of the mechanics of sap movement, the opening and shutting of the stomata that line the under leaf and the arrangement of cells in the green leaf. No one, at least in New England, can escape the blaze of autumn coloring. Very few realize "the disintegration of chlorophyll that yields the yellow xanthophyll, and also unmasks the other yellowish-red earotinoids . . . the concentration of sugar in the inactive leaves is favorable to the formation of anthocyans, red and blue colors, while the action of oxidases, as seen on the cut surface of ripe apples, produces blacks and browns."
Upon last analysis all life leans on the chloroplast. The Green Leaf expands one's gratitude at the same time stretching one's understanding.