An experimental inquiry into the cause of the ascent and descent of the sap : with some observations upon the nutrition of plants, and the cause of endosmose and exosmose / by G. Rainey.

  • Rainey, G. (George), 1801-1884.
Date:
1847
Catalogue details

Licence: Public Domain Mark

Credit: An experimental inquiry into the cause of the ascent and descent of the sap : with some observations upon the nutrition of plants, and the cause of endosmose and exosmose / by G. Rainey. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    CONTENTS The Nos. refer to the several Paragraphs. Ascending or Crude Sap—1. Elaborated Sap—2. Direction taken by the Sap—3. Cyclosis—4. Structure through which the Sap moves first to be determined—5. Object of the Experiments instituted—6. Experiment ls^.—7. Sap not propelled—8. Experiment 2nd — 9. Some Plants unsuitable for Experi- ments—10. Ascent of Sap due to a vital process in the leaves—11. Kemarks on the ls< and 2nd Experiments—12. Structure through which the Crude Sap ascends shown—13-14. Reference to Plate I, figs. 1, 2,—15. Intercellular Tissue—16. Position, and variation of in different Plants—18. Character of—19. Cause of ascent of Sap—20-21. Lateral difPusion of Sap—22. Eflfects of Transpiration—22. Experiments to con- firm the Explanation of the cause of the ascent of the Crude Sap—23-24. Effects of a solution of Sugar upon Plants—25. Crude Sap attracted—not propelled—26. Supposed effects of Endosmose—26. Use of the Pith—27. Descent of the Elabor- ated Sap—28. Experiments to determine the passages conveying I the Elaborated Sap—29. Observations made—30-31-32-33. Deductions from the Experiments—34. Independence of the different layers of Wood, and connection of each with the Roots—35. Vessels alone convey the Elaborated Sap—36. Openings of Communication in Spiral Vessels—36. Method of demonstrating Spiral Vessels in Leaves and Petals—37. Ar- rangement of Spiral Vessels—38. Vascular connection of the Petioles of Leaves with the Stem—39. Formation of Ducts and