. Hardwicke's science-gossip : an illustrated medium of interchange and gossip for students and lovers of nature . fthese seeds in the sun on damp earth under a bell-glass. In a few days they will begin to separate(Fig. 115), and it will then be plain that the noseof each seed is seamed with a longitudinal slit orsuture, like the hilum in the common bean. Eacheed is attached to the peduncle or flower-stalk by aslender thread, and the remains of the pistil appearbetween. Even in so simple a thing as this attach-ment of the seeds to the stalk, great Nature hasdisplayed a wonderful deal of skill
. Hardwicke's science-gossip : an illustrated medium of interchange and gossip for students and lovers of nature . fthese seeds in the sun on damp earth under a bell-glass. In a few days they will begin to separate(Fig. 115), and it will then be plain that the noseof each seed is seamed with a longitudinal slit orsuture, like the hilum in the common bean. Eacheed is attached to the peduncle or flower-stalk by aslender thread, and the remains of the pistil appearbetween. Even in so simple a thing as this attach-ment of the seeds to the stalk, great Nature hasdisplayed a wonderful deal of skill and forethought. * March 1S82. The threads start from the stalk, and extend to thepoint of the suture farthest from the stalk, forming anoutline like the letter M. By this means the sapflows into the wings up the length of the suture, andthe root is able to emerge at the point nearest thepeduncle. If the threads were attached elsewherethey would interfere with the escape of the root, lesssap would be supplied, and the means of attachmentwould not be so secure. In three or four days (Feb. 2S), the root becomes. Fig. 114.—Wings of Samara, brown on Sept. 4, iS
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Keywords: ., bookcentury1800, booksubjectnaturalhistory, booksubjectscience
