. Evenings at the microscope : or, Researches among the minuter organs and forms of animal life . Zoology; Microscopy; Microscopes. WHEEL-BEAREBS. 253 until the mass was discharged just behind the sinuous cleft. On our mixing carmirie with the water, the effect is very striking; the particles, whirled round in two circular vortices, are poured in an accumulated torrent through the sinuosity, and over the elevation at the front of the head. We presently perceive a slender line of crimson passing down below the mastax, which indicates a slender stomach- tube there; and, after a while, a little b


. Evenings at the microscope : or, Researches among the minuter organs and forms of animal life . Zoology; Microscopy; Microscopes. WHEEL-BEAREBS. 253 until the mass was discharged just behind the sinuous cleft. On our mixing carmirie with the water, the effect is very striking; the particles, whirled round in two circular vortices, are poured in an accumulated torrent through the sinuosity, and over the elevation at the front of the head. We presently perceive a slender line of crimson passing down below the mastax, which indicates a slender stomach- tube there; and, after a while, a little ball of the same pigment accumulates, and is seen resting a little lower down. This, then, indicates the form and position of the stomach ; it must be a very slender canal, terminating in a small rounded bag, at about one-third of the distance from the mastax to the base of the tube. The lengthened sac which you see is the ovary, from which the eggs are discharged into the lower part of the "WHEELS OF TUBE-WHEEL. The mouth needs a little explanation in detail. As you see it, you probably discern little resemblance in its parts to the same organ in Brachionus, and yet essentially it is formed of the very same parts ; and as it is very instruc- tive to observe the modifications, in different animals, of a common model of any particular organ, it will be worth while to devote a few minutes' careful observation to this structure before us, especially as it is here seen with more than usual brilliancy and clearness. The mastax, then, which you see in the centre of the. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Gosse, Philip Henry, 1810-1888. London : Society for Promoting Christian Knowledge


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