Sweet Peas and How to Grow Them (Paperback)

This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1900 edition. Excerpt: ...study, for it leads to a multiplicity of confusing equations that are calculated to repel rather than to assist the student. Mendel and His Experiments.--Before considering the application of Mendel's laws it may not be out of place to take a passing view of Mendel himself. George Johann Mendel was a priest in an Augustinian foundation at Alt-Brunn. In 1851 he moved to Vienna and spent four years there studying physics and natural science. From the report of the Royal Horticultural FIG. 7.--CROSS-FERTILISATION OF THE SWEET PEA Z, external parts of flower or parts of corolla: h, vexillum or standard; i, alee, or wings; j, carina, or keel. A, other parts of blossom: k, calyx, composed of leaves called sepals; I, stamens, ten in number, nine of them being joined into a tube by their filaments or stalks, the remaining one is free; m, pistil, consisting of a solitary carpel, which even at this early stage is seen to be a young pod, inside which are the ovules, destined to become seeds; n, anthers of stamens by which pollen or fertilising "dust" is carried; o, stigma of pistil or receptive organ. B, flowering stem: p, flower at stage when usually self-fertilisation has been effected; q, blossom at stage when emasculation (removal of anthers of stamens), must be effected, the wings being held open by Chrysanthemum flower-dressing tweezers, and the keel depressed by a needle; the anthers are removed from the flower before pollen cases, burst; r, wings; s, keel. C, flower before emasculation (shown in section for clearness): t, sepals; ti, standard; v, wing; w, keel; x, carpel or pod; y, stamens from which anthers are to be cut off. D, emasculated flower (in section): z, feathered stigma to which pollen of desired variety is to be...