. Elements of botany. Botany; Botany. 8 ELEMENTS OF BOTANY. In the second put blotting-paper that has been barely moistened; on this put seeds that have been soaked for 24 hours. In the third put water enough thoroughly to soak the paper: use soaked seeds. In the fourth put water enough to half cover the seeds. Place the vessels where they will have same temperature and note the time of germination. Tabulate your results as in the previous experiments. 11. Experiment 4.*i Will Seeds germinate without Airf— Place some soaked seeds on blotting-paper in the bottom of a bottle; close tightly with
. Elements of botany. Botany; Botany. 8 ELEMENTS OF BOTANY. In the second put blotting-paper that has been barely moistened; on this put seeds that have been soaked for 24 hours. In the third put water enough thoroughly to soak the paper: use soaked seeds. In the fourth put water enough to half cover the seeds. Place the vessels where they will have same temperature and note the time of germination. Tabulate your results as in the previous experiments. 11. Experiment 4.*i Will Seeds germinate without Airf— Place some soaked seeds on blotting-paper in the bottom of a bottle; close tightly with a perforated rubber stopper through which has been passed a long glass tube bent once at right angles as shown in Fig. 2. Exhaust the air from the bottle by attaching the tube to an air-pump or an aspi- rator, and after considerable pumping and while the ex- haustion is going on, seal the whole air-tight by heating the tube near the bend with a Bunsen burner or alcohol lamp flame until it can be drawn out to a thread. The stopper will be more certain to prove air-tight if it has been well moistened with glycerine or vaseline before being inserted in the bottle. Place other seeds of the same kind in another bottle and stopper tightly. Place other seeds of the same kind in a third bottle ; stopper loosely. Place the three bottles side by side, so that they will have the same conditions of light and heat. Watch for results, and tabulate as in previous experiments. Most seeds will not germinate under water, but those of the sun- flower will do so, and therefore Exp. 4 may be varied in the following manner:. Pig. 2. — Soaked Peas in Stoppered Bottle, ready for Exhaustion of Air. 1 Experiments maiked thus * are to he performed hy the teacher in the lahoratory pr 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 ori
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbotany, bookyear1896
