Some amongst them (Tergipes, Eolis) are also remarkable for possessing peculiarly modified cells placed in sacs (cnidosacs) at the apices of these same papillae, which resemble the " thread-cells " of the Coelentera.
The chromatin substance increases in amount; the thread stains moie deeply, and in most cases presents a homogeneous appearance.
And again he twisted the screw with the stripped thread, and again it turned uselessly in the same place.
It is the principal seat of the linen trade in the county, and has extensive cloth and thread factories, bleachfields and chemical works.
A steel cylinder (about the thickness of a goose-quill), which forms the micrometer screw, has two threads cut upon it, one-half being cut with a thread double the pitch of the other.
A thread is then pinned down between them, and on each side of this thread three others are pinned down parallel with it and 6 in.
Viipa, thread, and eraos, form) was first introduced by Rudolphi, but the group had been previously recognized as distinct by Zeder under the name Ascarides.
The Nematoda possess an elongated and thread-like form.
While importation of raw cotton increases importations of cotton thread and of cotton stuffs have rapidly decreased.
A large nematocyst, with everted thread, is seen in the right-hand ectodermal cell.
7) is a spherical or oval capsule containing a hollow thread, usually barbed, coiled in its interior.
The outer wall of the capsule is incomplete at one pole, leaving an aperture through which the thread is discharged.
Outer surface of the jellyCartilaginous margin of the like disk; six of these are disk covered by thread perradial, six interradial, cells.
This may have a radial stem-like organization, a central cell-thread giving off from every side a number of short sometimes unicellular branches, which together form a cortex round the central thread, the whole structure having a cylindrical form which only branches when one of the short cell-branches from the central thread grows out beyond the general surface and forms in its turn a new central thread, from whose cells arise new short branches.
The reduction is brought about simply by the segmentation of the spirem thread into half the number of segments instead of the normal number.
It has been suggested that synapsis may be connected with the early longitudinal splitting of the thread or with the pairing of the chromosomes, but it is possible that it may be connected with the transference of nucleolar substance to the nuclear thread.
Gold-working, the making of arms and musical instruments, wood-carving, cotton, silk and gold thread weaving are of importance.
The antennae of Diptera, which are also extremely important in classification, are thread-like in the more primitive families, such as the Tipulidae (daddy-long-legs), where they consist of a considerable number of joints, all of which except the first two, and sometimes also the last two, are similar in shape; in the more specialized families, such as the Tabanidae (horse-flies), Syrphidae (hover-flies) or Muscidae (house-flies, blue-bottles and their allies), the number of antennal joints is greatly reduced by coalescence, so that the antennae appear to consist of only three joints.
But the recovery of successive historical nuclei does not furnish a continuous thread, and if one is to be guided by the historical context of events the true background to each nucleus must be sought.
Similarly the thread of the Judaean annals in Kings is also found in 2 Samuel, although the supplementary narratives in Kings are not so rich or varied as the more popular records in the preceding books.
In the Roman Catholic Church mitres are divided into three classes: (1) Mitra pretiosa, decorated with jewels, gold plates, &c.; (2) Mitra auriphrygiata, of white silk, sometimes embroidered with gold and silver thread or small pearls, or of cloth of gold plain; (3) Mitra simplex, of white silk damask, silk or linen, with the two falling bands behind terminating in red fringes.
- Flemish Mitre, embroidered in gold thread, and the panels in colours, with figures of the Virgin and St Augustine.
From this event dates the beginning of the secular strife between England and France which runs like a red thread through medieval history.
Passing back from the centre of the web to the underside of an adjoining leaf or some other sheltered spot runs a single thread, the trap line affording passage to the spider to and from the sheltered spot and the snare itself.
At whatever spot an insect becomes entangled in the frame, the vibration set up by its struggles is transmitted along the nearest radiating thread to the centre and thence up the trap line to the shelter where the occupant lurks awaiting the signal.
By means of the calamistrum the silk secreted by the cribellum is teased into a fine thread which is twisted round the main threads of the web, giving it a very characteristic woolly or flocculent appearance.
By trailing a thread behind them spiders are able to drop from any height to the ground and to retrace their steps with certainty to a particular spot.
The principal classes of products affected are foods, wearing apparel, building materials, furniture, &c., chemical products, printing and allied trades, and sundry others, such as cigars, matches, tanning, paints, &c. In some manufactures the raw material is imported partly manufactured, such as thread for weaving.
A coarse screw-thread is formed in the upper part of the inner cup, and this screws on to the end of the iron bolt by which it is supported.
In 1894 the excess of imports over exports fell to 2,720,000, but by 1898 it had grown to 8,391,000, in consequence chiefly of the increased importation of coal, raw cotton and cotton thread, pig and cast iron, old iron, grease and oil-seeds for use in Italian industries.
The inner membrane is continuous with the wall of the hollow thread at a spot immediately below the aperture in the outer wall, so that the thread itself (f) is simply a hollow prolongation of the wall of the inner capsule inverted and pushed into its cavity.