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. 1887 edition. Excerpt: ...protoplasmic basis, in which are embedded--2. The chromatophores, which appear as elongated and branched rod-like bodies, more' or less closely and irregularly connected together: here and there will be seen highly refractive pyrenoids attached to the chromatophores: these are clearly to be distinguished by ...
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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. 1887 edition. Excerpt: ...protoplasmic basis, in which are embedded--2. The chromatophores, which appear as elongated and branched rod-like bodies, more' or less closely and irregularly connected together: here and there will be seen highly refractive pyrenoids attached to the chromatophores: these are clearly to be distinguished by their dusky purple staining on treatment with iodine solution. 3. A single nucleus in each cell, which is, however, difficult to recognise in well-nourished cells. 4. A large central vacuole. II. An examination of fresh filaments may result in the observation of the reproductive organs, and numerous specimens should be looked over with the object of finding them. Thus the reproduction by swarm-spores may be seen, especially in the morning: without the cell having undergone any change of form the cell-wall ruptures by a transverse split, and the protoplasmic body, having previously contracted, escapes through the slit as a motile pear-shaped, primordial cell, the anterior end of which is surrounded by a fringe of cilia. After a motile period these attach themselves bT the anterior end to some firm body, and, forming a cell-wall, develop into new filaments. Note young plants in early stages of germination: they may be found in numbers attached to submerged plants or stones, in waters where (Edogonium grows. III. There is some variety in the details of development of the sexual organs in different species of (Edogonium: some species are monoecious, others dioecious. The oogonia, or female organs, are most easily observed, being spherically enlarged cells of the filament, borne singly or several together: in such oogonia note--L The rupture of the cell-wall at the period of maturity by a transverse slit. ii. The beak-like canal, which projects in...
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Add this copy of A Course of Practical Instruction in Botany; Volume 2 to cart. $69.39, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2016 by Wentworth Press.
