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1. On the Structure of the Reproductive Organs in certain Hydroid Polypes
Published online by Cambridge University Press: 16 March 2015
Extract
Most of the observations contained in the present communication were made some years ago, and during the last autumn the author had an opportunity of repeating many of them and of adding some others. His object in now bringing them together was, that by being thus placed in possession of sufficient material, we might be enabled to make a useful correlation of the ascertained facts, so as to obtain, if possible, some more general expressions forthe phenomena presented.
- Type
- Proceedings 1857-58
- Information
- Copyright
- Copyright © Royal Society of Edinburgh 1862
References
page 52 note * Lectures on General Natural History in Medical Times
page 52 note † I have observed in these generative polypes an oval mass nearly filling the cavity of the body. It is developed from the endoderm, and projects from the floor of the cavity. It reminds one of the manubrium of a sporocyst, but is apparently solid.
page 60 note * In the main stem of the adult, the disposition of the ccenosarc is very peculiar. Instead of forming a single tube, it consists of numerous separate tubules, each with its ectoderm and endoderm. The tubules lie close upon the polypary, and leave an unoccupied space in the axis of the stem. They are connected to one another by an extension of the ectoderm, which thus forms a continuous lining of the polypary. In some parts the tubules of the cœnosarc run straight and parallel to the axis of the stem, in others, they are more or less curved, and frequently connected by transverse but irregular branches, so as to present a reticulated arrangement. The motion of the contents of the tubules can be distinctly witnessed in them. This complex structure of the ccenosarc disappears in the ramuli, the separate tubules here giving place to the ordinary simple tube.