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In the cuirassed animalcules (reminiscent of the assorted species of Surirella, Navicula, Closterium and Cosmarium), the epidermis clothes the entire inside floor of the cuirass, and strains it like a bag. In the midst of the strains which unite the 2 cuirasses of an animalcule, we see a nearly quadrangular opening of the uniting points; which opening is the mouth. The Cosmarium deltoïdes (fig. 18-19) has two warty cuirasses, united on their broad surface, the openings of which talk only with the floor uniting each animalcules. I title subsequently these openings pedal holes. Each valve (fig. 61. A. A.) kinds cornucopiae, the uniting point of which is seen in the midst of the animalcule, where the sexual openings (fig. 61, c.) are to be discovered. Ag. (Pl. I. fig. 12-13. a.), or striped, as within the Navicula costata (Pl. I. fig. 9-11.), where the stripes are distributed like rays, setting from an ombilic, to be present in one of the center ribs of the cuirass (fig. 9. a.); or merely ribbed; or provided with strong and elevated ribs, corresponding to within the Navicula ciliata (Pl. I. fig. 5. a.), where the ribs are moreover lined with tremendous hair.
Without moisture, they never live; a stable substance must offer a foundation to moisture, and, according to physical legal guidelines, the contact of the one with the opposite generates heat, and solely by the simultaneous action of moisture and heat can putrefaction happen. The remark should be repeated with a magnification of 4-600; and after having acquired some skill in the mode of magnifying, we proceed the meant investigation. Carefully examined, that unctuous and gelatinous substance is composed of myriads of elegantly and symmetrically formed beings, most of them belonging to the animal kingdom; and their varieties, their mode of life and of propagation can only excite the highest diploma of astonishment. In the midst of that chaos of limy, often stinking and putrid substances, apparently deprived of life, the attention, powerfully armed, discovers splendid proportions and symmetrical kinds, which the most fecond imagination of an arabesque painter couldn’t create. This inferior mucous layer (the stratum mucosum of botanists), does not constitute the organs of the animalcules, though the latter can not dwell and propagate themselves however in the midst of them. A more attentive investigation of the mucous inferior layer of Oscillatoriae (Pl. VI.) exhibits, nonetheless, that the gelatinous mass is composed of the deceased animalcules, by which we can distinguish the assorted levels of their dissolution, their fibrous stays, and their transition to a gelatinous kind.
The second, requiring nonetheless more dexterity, takes place by separating the bigger species, with a really sharp and cutting needle, however it requires an especially good eye and persistence. A particle of the green thermal substance, of the dimensions of a pin’s head, is placed upon the thing-glass, and torn between two sharp devices, or, if wanting, with pins; and the inexperienced fragments are moistened with a small drop of water. Towards the decrease parts, the cuirass forms within the Naviculae and Frustuliae a flat surface, usually quadrangular (parallelogram), known as pedal surface (fig. 8. e., fig. 13. b.), to which two animalcules are all the time adhering. The Cosmarium bipes (fig. 20) has a cuirass of the identical kind, and appears however all the time split on its external floor, the more in order, throughout fecondation, this fissure (fig. 20. a. The Pharyngoglossa sygmoïdea has, above the mouth, a longitudinal fissure (fig. 16. b.), through which the pedal bladder comes out (fig. 16. b.
The univalve cuirass is a leaf rolled on itself (Fig. 5-17., 38-17), the edges of which are confounded together, so that they never kind, except just a few small openings, a valve surrounding totally the animalcule. In the Cosmarium sinuosum (fig. 21), stellinum (fig. 22.), truncatum (fig. 23-24), as well as within the Closteria (Pl. V.), I have seen, in the very second when the animalcule was dying under violent galvanic strokes, the coat falling off from the cuirass, and contracting itself partly. Has an animalcule been found, it must relaxation a while below the instrument. The microscope, meant for these investigations, should present the magnified objects clear and distinct. Greville, Meyen and Turpin gave the best representations of them; Kützing described them in his Synopsis Diatomearum (as wretched a performance because the drawings representing these animalcules), without possessing the means required for similar investigations, nor the knowledge of their remarkable construction. These animalcules residing never in thermal water, they are only to be seen at just a few inches distance from the wells, and when stored in glasses or pots, they quickly retreat in the direction of the sides of the vessel. High in the most-costly-first Completed Listings searches you’ll also discover a quantity of individuals paying a few hundred dollars for one hundred plated coins or ingots.