This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1907 Excerpt: ...right and left the lateral processes which are the rudiments of lateral branches. They are scarcely formed before they are cut off by a concavo-convex wall (/, Fig. 75) while the apex goes on growing. When they have reached a considerable length they divide into two cells by a transverse wall. The distal one retains ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1907 Excerpt: ...right and left the lateral processes which are the rudiments of lateral branches. They are scarcely formed before they are cut off by a concavo-convex wall (/, Fig. 75) while the apex goes on growing. When they have reached a considerable length they divide into two cells by a transverse wall. The distal one retains the characters of an apical cell, and will after a time develop a lateral branch to the left, while the lower cell divides by successive walls into a row of cells and thus becomes a cell body. This is an extreme case. Generally, the apical cell itself does not give rise to lateral branches directly, but only indirectly, from the segments cut off from it. The growing point is further not limited to the apical cell but includes in addition a number of cells, and posteriorly merges gradually into cells which CauUrpa proU/ie From the Bonn Textbook rera. 0, growing point; 6, leaves; aively branches. are fully developed. The form of the apical cell is, however, still identical with, or at least very like, that of Stypocaulon. At the ends of the stems of mosses and ferns we meet with another form of apical cell, distinguished by being two-or three-sided. In the latter case it has the form of a tetrahedron or a three-sided pyramid with its curved base facing outwards. Cell divisions take place parallel to the three surfaces which face inwards and follow each other in definite order, so that the individual segments which are cut off from the three-sided pyramid are arranged in three rows behind the apical cell. Very soon, however, further division-planes divide these up into a large number of cells. The stem-apex of the Phanerogam is more complicated still. Here we find no predominant apical cell to which all the other cells may be referred; the apex con...
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Seller's Description:
This is an ex-library book and may have the usual library/used-book markings inside. This book has hardback covers. In fair condition, suitable as a study copy. No dust jacket. Re-bound by library. Please note the Image in this listing is a stock photo and may not match the covers of the actual item, 1450grams, ISBN:
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
Ex-library, With usual stamps and markings, In poor condition, suitable as a reading copy. Please note the Image in this listing is a stock photo and may not match the covers of the actual item, 1450grams, ISBN:
