(histocytes) and germinal cells, actual or potential (archaeocytes), amongst the constituent cells of the animal body.
In this way we may distinguish, first, vegetative reproduction, the result of discontinuous growth of the tissues and cell-layers of the body as a whole, leading to (I) fission, (2) autotomy, or (3) vegetative budding; secondly, germinal reproduction, the result of the reproductive activity of the archaeocytes or germinal tissue.
In germinal reproduction the proliferating cells may be undif f erentiated, so-called primitive germ-cells, or they may be differentiated as sexual cells, male or female, i.e.
If the germ-cells are undifferentiated, the offspring may arise from many cells or from a single cell; the first type is (4) germinal budding, the second is (5) sporogony.
From these facts,, and from those of the sporogony, to be described below, we may regard budding to this type as taking place from the germinal epithelium rather than from ordinary ectoderm.
However, both of the statements and figures of Lang and of the facts to be described presently for medusae (Margellium), it is at least theoretically possible that both germinal and vegetative budding may occur in polyps as well as in medusae.
The clearest instance of germinal budding is furnished by Margellium (Rathkea) octopunctatum, one of the Margelidae.
The buds of Margellium are produced on the manubrium in each of the four interradii, and they arise from the ectoderm, that is to say, the germinal epithelium, which later gives rise to the gonads.
Especially noteworthy in the germinal budding of Margellium is the formation of the entocodon, as in the vegetative budding of the indirect type.
- Budding from the Ectoderm (germinal epithelium) in Margellium.
The formative principle or force of the world is said to contain the several rational germinal forms of things.
On the re-establishing of the Catholic religion on the basis of the new Concordat, promulgated 18 Germinal, year X.
Germinal Layers and Food-Canal.
With Germinal Layers.
Kovalevsky in 1871 first described the formation of the germinal layers in insects.
In Ventose and Germinal he published, under the nom de plume of "Lalande, soldat de la patrie," a new paper, the Eclaireur du peuple, ou le defenseur de vingi-cinq millions d'opprimes, which was hawked clandestinely from group to group in the streets of Paris.
The development of particular things from this germinal matter consists in differentiation, the acquiring of particular forms of which the knowable universe consists (cf.
The most instructive classification of the " variations " exhibited by fully formed organisms consists in the separation in the first place of those which arise from antecedent congenital, innate, constitutional or germinal variations from those which arise merely from the operation of variation of the environment or the food-supply upon normally constituted individuals.
On the 16th Germinal, Tallien procured a decree of accusation against him, but he was already in safety, taking refuge probably at Lausanne.
Which established liberty of worship. In the critical days of Germinal and of Prairial of the year III.
On the 12th Germinal he was in the tribune, reading a report on the food supplies, when the hall of the Convention was invaded by the rioters, and when they withdrew he quietly continued where he had been interrupted.
C, Nearly ripe cercariae; cc, cystogenous cells; dr, daughter-redia; dt, limbs of the digestive tract; f, head-papilla; h, eye-spots; h', same degenerating; k', germinal cell; 1, cells of the anterior row; m, embryo in optical section, gastrula stage; n, pharynx of redia; o, digestive sac; oe, oesophagus.
They expanded and developed, and applied to new situations and circumstances of the national life, the truths which in a more germinal form they had inherited from their ancestors.
He was arrested, and as a result of the insurrection of the 12th Germinal of the year 3 (the ist of April 1795), the Convention decreed his immediate deportation to French Guiana.
It must, of course, be understood that the germinal epithelium covering the ridge, and the mesenchyme inside it, are both derived from the mesoderm or middle layer of the embryo.
Shows position of germinal epithelium.
Temporary oviducts are formed between the "spermduct" and the germinal epithelium at each oviposition.
Such mutations are not the product of the environment, but are an outcrop of the constitution of the germinal material of the varying organism, the result either of causes as yet undetected, or of the premutations and eliminations suggested by the work of Mendel (see Mendelism).
Every new individual starts life (see Reproduction) as a mass of germinal material derived from one or from two parents, but with a coherent individuality of its own.
But whatever be the theory of the mode of inheritance, or the mechanism by which the germinal plasm of an individual is made up, it is plain that there is correlation between the various qualities of an individual due to the mode of origin of its germ plasm as a selected individual portion of the parental germ plasm.
Cossar Ewart, "Variation, Germinal and Environmental," in Trans.
The former friend of Saint Just now offered his services to the Thermidorians, and after receiving from the Convention the title of "Sauveur de la Patrie," subdued the sans-culottes of Paris, when they rose in insurrection against the Convention on 12 Germinal (April 1).
The new method of physics is verifiable by its fruitfulness, and so free of any immediate danger from dialectic. Its germinal thought may not have been new, but, if not new, it had at least needed rediscovery from the beginning.
In 1835 he communicated to the Munich academy of sciences his researches on the physiology of generation and development, including the famous discovery of the germinal vesicle of the human ovum.
By its prompting the thing grows, develops and decays, while this " germinal reason," the element of quality in the thing, remains constant through all its changes.
The germinal worldmaking powers f (rrr p,uartKoi XOyoc), which, in virtue of its tension, slumbered in Pneuma, now proceed upon their creative task.
A Stoic might consistently maintain that World-Soul, Providence, Destiny and Germinal Reason are not mere synonyms, for they express different aspects of God, different relations of God to things.
Subtilis) - the axis of growth of the germinal rodlet is at right angles, to the long axis of the spore.
The spore swells and elongates and the contents grow forth to a cell like that which produced it, in some cases clearly breaking through the membrane, the remains of which may be seen attached to the young germinal rodlet (figs.
The germinal cell then grows forth into the forms typical for the particular Schizomycete concerned.
(After de Bary.) "1, fragments of filaments with ripe spores; 2-5, successive stages in the germination of the spores, the remains of the spore attached to the germinal rodlets.
From the Fortune des Rougon to the Docteur Pascal (1893) there are some twenty novels in the Rougon-Macquart series, the second half of which includes the powerful novels Germinal (1885) and La Terre (1888).