It is further noticeable that in Rhynchelmis the covering of vesicular cells which clothes the drainpipe cells of the adult nephridium is cut off from the nephridial cells themselves and is not a peritoneal layer surrounding the nephridium.
The tail may be a simple hollow muscular process or provided with stiff bristles set in transverse rows, or divided into two equally long processes, or finally it may form a large vesicular structure.
When the true skin is inflamed various appearances may arise, according to the intensity and extent of the inflammation, and the eruption may be papular, vesicular, pustular, tubercular, bulbous or ulcerative.
,y leg), and the external vesicular portion is not dilated.
The thicker portion develops a terminal muscular rostellum and two or four suckers, the thinner end (" tail ") is vesicular, more or less elongated, and contains the six embryonic hooks.
Orifice concealed at the bottom of a vestibular shaft, surrounded by a solid or vesicular calcareous deposit.
Respiration is conducted by the general surface, by the branchial lamina (external branch) of the feet, and the vesicular appendage (when present) at the base of this branch.
Chalcedony occurs as a secondary mineral in volcanic rocks, representing usually the silica set free by the decomposition of various silicates, and deposited in cracks, forming veins, or in vesicular hollows, forming amygdales.
Minute vesicular cavities are not infrequently present, sometimes as negative cubes, and these may contain saline solutions or carbon dioxide or gaseous hydrocarbons.
The top of the heads of the images is cut flat to receive round crowns made of a reddish vesicular tuff found at a crater about 8 m.
Tabulae and vesicular endotheca present.
- Solitary corals with rudimentary septa, and the calicle filled with vesicular endotheca.
In the Graptoloidea certain lateral and vesicular appendages of the polypary in the Lasiograptidae have been looked upon as connected with the reproductive system; and in the umbrella-shaped synrhabdosomes already referred to, the common centre is surrounded by a ring of what have been regarded as ovarian capsules.
The theory of the gonangial nature of the vesicular bodies in the Graptoloidea is, however, disputed by some authorities, and it has been suggested that the zooid of the sicula itself is not the 20, Climacograptus Scharenbergi.
Product of the normal or sexual mode of propagation in the group, but owes its origin to a peculiar type of budding or non-sexual reproduction, in which, as temporary resting or protecting structures, the vesicular bodies may have had a share.
And to the vesicular eyes.
9): (I) a vesicular portion (s) opening to the exterior on the ventral surface of the legs by a narrow passage (s.d); (2) a coiled portion, which is again subdivided into several sections (s.c); (3) a section with closely-packed nuclei ending by a somewhat enlarged opening (p.f); (4) the terminal portion, which consists of a thin-walled vesicle.
53); at other times it remains in a withered or marcescent form, as in Erica; sometimes it becomes inflated or vesicular, as in sea campion (Silene maritima).
The former consist of one pair or more of vesicular testes communicating by fine ducts with a vesicula seminalis.