. Experiments with plants. Botany. TBI! A WAKENING OF THE SEED Dyes, at drug-stores) or ordinary red ink answers ad- mirably. Dissolve enough in water to make it bright red, and then submerge the seeds in the solution; it is well to use a good many seeds and to remove some every few minutes and take off the covers to see how far the water has penetrated.^ Do you find that the water penetrates first at the opening ? In what direction does it spread inside the seed? What external indications do you see of this in the Bean (Fig. 14)? Trace it with especial care in the Walnut and Pecan. Although i
. Experiments with plants. Botany. TBI! A WAKENING OF THE SEED Dyes, at drug-stores) or ordinary red ink answers ad- mirably. Dissolve enough in water to make it bright red, and then submerge the seeds in the solution; it is well to use a good many seeds and to remove some every few minutes and take off the covers to see how far the water has penetrated.^ Do you find that the water penetrates first at the opening ? In what direction does it spread inside the seed? What external indications do you see of this in the Bean (Fig. 14)? Trace it with especial care in the Walnut and Pecan. Although in these nuts the contact between the germ and the cover is small, yet this is offset by an absorb- ent, wick-like, central strand which takes up water directly from the opening and from which water spreads out into the broad partitions which are in eon- tact with the folds and surfaces of the germ; the caulicle lies at the end of the fibrous, wick-like strand (Fig. 24). We shall probably find that the coloring matter will not peneti-ate into the germ, although the water does; the method is only trustworthy as showing the ' The seed should he washed and wiped with a cloth to remove the dye. Eosin stains may be removed from hands and colorless fabric by Javelle water (obtainable at druggists') or by bleaching powder (obtainable at grocers').. Walnut divided in half, showiug the wick-like, cen- tral strand (s) by which the water travels through the seed to the caulicle and the hroad absorbent plates by means of which it 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 Osterhout, Winthrop John Van Leuven, 1871-. New York, The Macmillan company; London, Macmillan & co. , ltd.
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