Journal of the Royal Microscopical SocietyRoyal Microscopical Society., 1893 - Microscopes |
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acid alcohol animals Anzeig apparatus appears Ascidians Bacillus bacteria bacterium Bakteriol blastopore body cent Centralbl centrosome cholera chromatophore Coccidia coli colonies colour Comptes Rendus connected contains cover-glass cultivations cultures described digestive dorsal ectoderm eggs embryo endoderm epithelium examined fæcal filaments finds fluid Folkestone food-globules formation Gault gelatin genera genus germinal gives granules growth Herr infection inoculated instrument intestine Journ Lagena large number larvæ layer lens leucocytes Malpighian tubules membrane mesoderm method Micr micro-organisms Microscope Microtomes Nodosaria nucleus object observations obtained optical organs parasite Parasitenk photomicrographs photomicrography plants plate VIII present primitive Proc Prof protoplasm rare regard Reuss Rotifers screw sections segmentation Sitzungsb slide solution species specimens sporanges spores stage stained Streptococcus structure substances surface tion tissue tube tubercle vacuoles ventral vesicle Wien Wiss Zeitschr zone xi Zool دو
Popular passages
Page 578 - Dr. HENRI VAN HEURCK'S MICROSCOPE FOR HIGH-POWER WORK AND PHOTOMICROGRAPHY, AS MADE BY W. WATSON & SONS TO THE SPECIFICATION OF Dr. VAN HEURCK OF ANTWERP. Fitted with fine adjustments of utmost sensitiveness and precision, not liable to derangement by wear. Has Rackwork Draw-tube to adjust Objectives to the thickness of Cover Glass. Can be used with either Continental o; English Objectives, the body length being variable from 142 to 300 millimeters.
Page 594 - Berthelin, 1880, Mem. Soc. Geol. France, ser. 3, vol. i. no. 5, p.
Page 437 - There is a certain amount of evidence in favour of the view that the arterial blood is slightly less oxidised during activity than during rest. The experiments most to the point are those of Hill and Xabarro'3'.
Page 711 - Cc. of water, — and are then washed in alcohol and placed in oil of cloves containing eosin, the lignified and suberized walls will be stained blue, while cellulose walls will be red. The sections may then be mounted in Canada balsam. When sections are placed for a quarter of an hour in a concentrated alcoholic solution of cyanin, and are then washed in alcohol and transferred for a quarter of an hour to a 5 per cent, ammoniacal solution of Congo-red, the lignified membranes will appear blue, while...
Page 569 - With a full set of these reservoirs thirty cover-glasses can be carried from the first to the last liquid quite as quickly as a single preparation, for the time necessarily required for the action of the various reagents on a single specimen can be profitably employed in transferring other preparations. The cover-glasses can be handled very quickly, neatly, and with perfect safety with a pair of fine forceps.
Page 466 - Stated in a word, the most remarkable peculiarity of the salpa embryo is this. It is blocked out in follicle cells which form layers and undergo foldings and other changes which result in an outline or model of all the general features in the organization of the embryo. While this process is going on the development of the blastomeres is retarded, so that they are carried into their final positions in the embryo while still in a very rudimentary condition. Finally when they have reached the places...
Page 733 - It was entirely animal, without plants, and it at first depended directly upon the pelagic food supply. 2. It was established around elevated areas in water deep enough to be beyond the influence of the shore. 3. The great groups of animals were rapidly established from pelagic ancestors.
Page 569 - Instead of fastening the rods in the dish they can be bound together by means of fine wire, preferably copper, in the form of mats, which answer every purpose and which can be removed at will if the dish is desired for other purposes. This is easily accomplished by running the wire around the ends of the rods after they have been cut the desired lengths. A shoulder-like projection can be procured on the ends of the rods by heating them until soft and pressing them against a firm surface. These prevent...
Page 493 - Examination of this material shows that large brood chambers are formed at the margin of the disc during the later stages of growth. These are at first lined with a thin layer of protoplasm. At a later stage the central region of the disc is found to be empty, and the whole of the protoplasm is massed in the brood chambers in the form of spores. The spores have the structure of the ' primitive disc,' which during the early stages of growth of the Orbitolites occupies the centre of the shells.
Page 463 - ... pomatia are not olfactory organs, were untrustworthy from his use of turpentine, which gives off a vapour that is irritating to the sensitive tissues generally. If snails are placed on flat slabs, the edges of which are smeared with eau de Cologne, methyl, ether, or ethyl acetate, liquids the vapours of which are not irritants, such as have the tentacula removed gradually approach the edges of the slabs, while those whose tentacles are uninjured turn away from the edges. He concludes, therefore,...