Queen cell

“ It is safest not to cut the cells out until they are within twenty-four to forty-eight hours of their full maturity. In case a nucleus or colony has not been queenless long enough to make it ready to accept a queen cell, the latter may be placed in a cell protector made of wire cloth or of a spiral coil of wire and then inserted between the central combs of the hive. The lower end only of the protector is open, so that the upper portion of the cell—the part easily bitten open by the workers—is wholly covered. ”

“ DESTROYING QUEEN-CELLS WHEN INTRODUCING QUEENS As stated on a previous page, some queen-cells will be built on the combs that have brood in them. It will not be necessary to look the combs over and destroy those cells if a young queen is introduced. In the course of twenty-four hours after the queen gets possession of the combs, she will destroy the cells, that is, the queen will open them near the base and sting the nymph, or nearly matured queen as the case may be, and the bees will soon finish the work of destroying the cell, and removing the dead queen. ”

“ Some of these cells are used for storage, others for the rearing of brood. The cells in which workers are reared are smaller than those appropriate for the rearing of drones, while the “royal cells,” in which the young queens are developed, are large in size and of an irregular oval in form (fig. 25) . It is believed that from the nature of the cell in which she is ovipositing, the queen derives a reflex impulse to lay the appropriate egg—fertilized in the queen or worker cell, unfertilized in the drone cell, as previously mentioned. ”

“ The queen-cells are remarkably distinguished from those for workers or drones, in respect to size, direction, shape, and amount of material. They occupy at least as much space as half a dozen ordinary cells. They are directed downwards, instead of lying horizontally. They are irregularly oval or pyriform in - 70 - shape, and are made up of a sort of mosaic of wax, which material, so sparingly used elsewhere, seems lavished on the royal nurseries. ”

“ The size of the cell, and, to a less extent perhaps, its position, no doubt influence this development, but the food seems to be the main factor, for small cells built horizontally, if their larvæ are supplied with the food designed for royal larvæ, will be found to contain queens, and frequently these queens, even though small, are quite prolific, and show in all respects the instincts of a queen. ”

“ This new addition of strength will greatly encourage the nuclei, and give them the means of starting young queens, if they have not succeeded in doing so with the first comb. I have very frequently found that for some cause which I have not yet ascertained, they often start a large number of queen cells, which in a few days, are all discontinued and untenanted. ”

“ The knife used to separate the cells should be very thin, sharp and warm. If a cell is cut into, just take a piece of thin 41foundation, slightly warm it, place it over the aperture and at once smooth it down with a warm knife so that it will be perfectly air-tight, if not so done, the queen might not hatch out, and she certainly would not if she is not within six hours of being ready to. If a patched cell is given to a nucleus colony, and not made perfectly air-tight, the bees would quickly destroy it. ”

“ When the queen had laid eggs in all the cells of the two older combs, she went several times round this circumference (as she always does, in order to ascertain whether she has not forgotten any cell) , and then prepared to retreat into the lower part of the breeding-room. But, as she had overlooked the four cells of the new comb, the workers ran impatiently from this part to the queen, pushing her, in an odd manner, with their heads, as they did also other workers they met with. ”

“ The queen is reared from the same egg as the worker, but in a much larger cell, nearly perpendicular, and on different food, called "royal jelly," which has the effect of fully developing the sexual apparatus. The time from the egg to the perfect queen emerged from the cell is about sixteen days. ”

“ Queen-cells that are short, blunt-end, thin-walled and thinly waxed, as shown in fig. 10, contain very inferior queens, and all such cells should be destroyed. They are just such queen-cells as bees make when they have a queen of any kind in the hive. ”

“ When the bees desire that a queen shall be born, the builders and sculptors are first consulted. They set to work to make three or four queen cells, or, as we might call them, royal cradles; in one of them the future queen will be reared. We have already seen that queen cells are different from the ordinary cells, and that for their accommodation a part of the comb is cut away. ”

“ By the time the chick is ready to be hatched there are millions.
Usually, however, a cell is small—just as much protoplasm as its still more minute nucleus can keep going; though here, again, one must be guarded, for there may be several nuclei instead of only one. The protoplasm on the external surface and around the nucleus is specialized into a more or less definite membrane. To this outer envelope are attached fine fibrils, which join up to a small body within the cell, called the centrosome, and by the lengthening and shortening of these its shape can be altered. ”

“ It is (vide fig. 35A, g.e.) composed of two or three layers of cells, with granular nuclei, of which the outermost layer is more columnar than the remainder, and has elongated rather than rounded nuclei. Its cells, though they vary slightly in size, are all provided with a fair amount of protoplasm, and cannot be divided (as in the case of the germinal epithelium of Birds, Elasmobranchii, &c.) , into primitive ova, and normal epithelial cells. Very occasionally, however, a specially large cell, which, perhaps, deserves the appellation primitive ovum, may be seen. ”

“ Until, however, further evidence is forthcoming in support of this syncytial theory of structure, it would be unwise to regard it as established sufficiently to constitute a serviceable working hypothesis; hence, for the time being, we must accept the assertion that the cell represents the ultimate tissue-unit. Our present day definition of a cell is a minute portion of living organized substance or protoplasm. ”

“ The systematic elaboration of the theory of cells, founded on careful observation and mature reflection, began with the year 1844. Almost at the same time in this year appeared Nägeli's detailed enquiries into the occurrence of the cell-nucleus and into cell-division, von Mohl's observations on the primordial utricle and its behaviour in the process of cell-division in young tissue, and lastly those of Unger on merismatic cell-formation (cell-division) as a general mode of proceeding in the growth of organs. ”

“ New cells are gradually formed from the nourishing yelk around the germ, each being at first roundish in shape, and having a spot near the centre, called the nucleus. The reason why cells increase must remain a mystery until we can penetrate the secrets of vital force—probably forever. But the mode in which they multiply is as follows: The first change noticed in a cell, when warmed into vital activity, is the appearance of a second nucleus within it, while the cell gradually becomes oval in form, and then is drawn inward201 at the middle, like an hour-glass, till the two sides meet. ”

“ In some cells, probably in all, the centrosome presides over division. Cells, however, do not always divide in the same way. Some simply lengthen, the nucleus also lengthening inside, become constricted in the middle like a dumb-bell, and separate. (See Diagram 15.)
Diagram 16.—Cell Division.
Others manage differently. In them the nucleus simply bursts, and turns its essential elements, a number—always a constant number—of coarse threads, adrift. Meanwhile, two centrosomes have moved to opposite ends of the cell, and there anchored themselves by fibrils ”

“ The individuals—each known as a frustule—assume very various forms and may be unicellular or multicellular, but present no differentiation; many similar cells may be connected in chains, embedded in mucilaginous masses, or attached to mucilaginous stalks. The cells are bilateral or centric, often asymmetrical, slightly dorsiventral and have no cilia; those living in the free condition have the power of sliding upon a firm substratum. The cell contains 1 cell-nucleus and 1–2 plate-shaped or several disc-shaped chromatophores. ”

“ But what threatens more 107absolute extinction of this argument still, all the German physiologists do not accept even the protoplasm-cell. Rindfleisch, for example, in his recently-published ‘Lehrbuch der pathologischen Gewebelehre’ speaks of the cell very much as we understand Virchow to have spoken of it. To him there is in the cell not only protoplasm but nucleus, and perhaps membrane as well. To him, too, the cell propagates itself quite as we have been hitherto fancying it to do, by division of the nucleus, increase of the protoplasm, and ultimate partition of the cell itself. ”

“ If the distinction between cell-division and free cell-formation had often been suggested by former observers, Nägeli was the first who distinctly defined it, though not exactly as it is now defined. ' In cell-division the contents of the mother-cell separate into two or more portions; a perfect membrane forms round each of these portions, which at the moment of its appearance rests partly on the wall of the mother-cell and partly on the adjacent walls of the sister-cells. In free cell- formation a smaller or larger part of the contents of a cell, or even the whole of them becomes isolated. ”

“ In these cases a number of constant cell-individuals remain with their nucleus throughout life, although a used-up portion of their cell-body may be replaced by regeneration from the cytoplasm. Thus our human body, like that of all the higher animals and plants, is a "cell-state" in another sense. Every day, nay, every hour, thousands of its citizens, the tissue-cells, pass away, and are replaced by others that have arisen by cleavage of similar cells. ”

“ With regard to the former, we have seen that in the single cells, constituting unicellular organisms, there is always a bounding membrane of denser texture than the rest of the protoplasm. As the cell develops its capabilities, we have a shell or case of non-living matter secreted around it, with apertures for communication with the outside world, and increasingly effective protection is provided as protoplasm, whether in the single cell or the body, leaves the water, and has to face the inclemencies of terrestrial life. ”

“ The cells composing the muscles are, moreover, like neither kind of blood-cells, and the cells of which the liver is composed are not like the cells of the muscles. That is, there are many different kinds of cells in the body of a many-celled animal. While the single cell which composes the whole body of the Amœba is able to do all the things necessary to maintain life, the various cells in the body of a complex animal are differentiated or specialized, certain cells devoting themselves to a certain function or special work, and others to other special functions. ”

“ The partial explanation came in 1838 with Schleiden and the following year with Schwann, who stated that animals and plants are built up of definite living units, the cells; that such units compose the tissues that had been determined by the physiologist Bichat, and that the organs are composed of definite layers of cells. The simplest animals, what we now call the Protozoa, were shown by Dujardin to be each composed of only a single cell. We define a cell as a particular mass of living substance regulated by a particular center, the nucleus. ”

“ In some cases the protoplasm at the circumference is so modified as to give the appearance of a limiting membrane called the cell wall. In brief, then, a cell is a mass of nucleated protoplasm; the nucleus may have a nucleolus, and the cell may be limited by a cell wall. Every tissue of the human body is formed through the agency of protoplasmic cells, although in most cases the changes they undergo are so great that little evidence remains of their existence. ”

“ As a matter of fact, it is not necessary for single cells to have this great length, because it is possible for them to be arranged end to end, making a path of living protoplasm consisting not of one cell but of a chain of them. If we look at a nerve cell under the microscope we see that it is made up of a little central mass of protoplasm to which has been given the name of “cell body.” From this cell body extends a tiny thread of living protoplasm. ”

“ In all the epithelial tissues that we have considered we have one feature in common: they are cells, each equivalent to the amoeba, that have taken on special duties-- in a word, they are specialists. The amoeba is Jack of all trades and a free lance; the protective epidermal cell, the current-making ciliated cell, the bile or urea-making secretory cell, is master of one trade, and a soldier in a vast and wonderfully organized host. We will now consider our second kind of cell in this organization, the cell of which the especial aim is the building round it of a tissue. ”

“ Matthias Jakob Schleiden (1838) supposed that in plants the new cell arose from the parent cell by a sort of “crystallizing” process from the cell fluid or “cytoblastema”; the nucleolus appearing first, then the nucleus, and finally the cell-body. Theodor Schwann (1839) extended Schleiden’s theory to animal tissues, with this yet greater error, that new cells might arise, not only within the mother cell as Schleiden had supposed, but also in the intercellular substance so common in animal tissues (to which he also gave the term “cytoblastema”) . ”