Quarterly Journal of Microscopical Science, Volume 7J. and A. Churchill, 1859 |
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Common terms and phrases
Algæ angle animal aperture apophysis appears areolation ascus Biddulphia body Brébisson Busk calcareous Californian guano Canada balsam caudal caudal fin cavity cell-wall cells centre character cloaca colour corpuscles Coscinodiscus Denticella dentine described diameter Diatomaceæ Diatoms disc disease distinct ditto doubt Ehrenberg embryo enamel epithelial scales examination exhibited Favus figures filaments fresh-water front view frustules fungi fungus genus glass granular granular matter granules guano hair hyaline inch instrument Kützing Lamlash layer length lines magnifying margin matter membrane microscope Microscopical Society minute mycelia Navicula notochord object object-glass observed occur operculum organs ovum paper parasitic peculiar plate portion posterior present Professor Smith radiating rays refractive power remarkable screw seen segments side view slides species specimens Sphæria spicula spines spores sporidia sporules striæ structure surface threads tion tissue tube valve vertebral vertebral column vittæ whilst Zygoceros
Popular passages
Page 109 - Y. ON THE MODE OF FORMATION OF SHELLS OF ANIMALS, OF BONE, AND OF SEVERAL OTHER STRUCTURES, by a Process of Molecular Coalescence, Demonstrable in certain Artificially-formed Products.
Page 249 - ... resembling what might be torn from the surface of an old trunk, with all the hair rubbed off. The professor brought his microscope to bear upon it, and presently found some fine hairs scattered over the surface ; after carefully examining which, he pronounced with confidence that they were human hairs, and such as grew on the naked parts of the body ; and still further, that the person who had owned them was of a fair complexion. This was a very interesting decision, because the fragment of skin...
Page 196 - Microscope, suddenly disappears, and, " like the baseless fabric of a vision, leaves not a wreck behind.
Page 250 - ... because the fragment of skin was taken from the door of an old church in Yorkshire;* in the vicinity of which. a tradition is preserved, that about a thousand years ago a Danish robber had violated this church, and having been taken, was condemned to be flayed, and his skin nailed to the church door, as a terror to evil-doers.
Page 140 - ... though slight degree of adhesiveness which retains them pretty firmly attached together when in the position most favourable for its operation, namely when flat surface is applied to flat surface, but otherwise allows them to slip very readily upon one another." The aggregating tendency of the red disks is thus regarded as a phenomenon similar in kind, though inferior in degree, to the well-known adhesiveness of the white corpuscles. It is further shown, from numerous experiments, that the red...
Page 53 - Seeing then that the fungi are characterised throughout nature by feeding on effete or decayed matter, that the fungi supposed to be peculiar to certain diseases of the skin are also found in many other diseases of the cutaneous surface, that competent observers have not been able to find them in these peculiar diseases, that sporules and filaments described as the cause of one...
Page 127 - I placed four of the dead bees in circumstances favourable for the germination of the spores, and in about ten days I submitted them again to examination. They were covered with mould, consisting chiefly of a species of Mucor, and one also of Botrytis or Botryosporium. These fungi were clearly extraneous, covering indifferently all parts of the insects, and spreading on the wood on which they were lying. On the abdomen of all the specimens, and on the clypeus of one of them, grew a fungus wholly...
Page 37 - Lophobranchii, Plectognathi, and others) ." I have omitted Heckel's account of the vertebral column of the Pycnodonts which precedes the long and important extract here given, as less immediately germane to the present subject. Suffice it to say, that he admits altogether three modes of termination of the chorda dorsalis : 1 . The end is naked or unprotected by any ossification, as in Palaeozoic Fishes and existing Ganoidei. 2.
Page 132 - In some cases this diifereiice would lead to great inconvenience and confusion. It sometimes happens, for instance, that in looking at a field of view at some distance, objects considerably nearer are so interposed as to present themselves in the picture formed in one eye and not in the other. Thus, in looking at a landscape, if the finger or any other object is held before one eye, the image of it from the one retina is superposed in the sensorium on a part of the landscape formed in the other eye.
Page 13 - DIATOMACE& of the NORTH SEA, belonging to the GENERA COSCINODISCUS, DENTICELLA, and RHIZOSOLENIA. With a Plate. By Professor MAX SCHULTZE. THE sea around Heligoland is rich in large Diatoms, which are frequently brought up in considerable numbers by the fine net. Several of the species very abundant there have been found by Ehrenberg at Cuxhaven, as Coscinodiscus, Zygoceros, Eucampia, Triceratium ('Abhandl. d. Akad. d. Wiss. z. Berlin/ 1839).