Journal of the Royal Microscopical SocietyRoyal Microscopical Society, 1878 |
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Edisi yang lain - Lihat semua
Istilah dan frasa umum
acid action alulæ Amphiuma angle angular aperture aniline animal aperture apparatus appear axis Bacteria Bacterium balsam blood body Canada balsam cells centre chromic acid coloured blood-corpuscles condenser contraction corpuscles covering glass crystals described diameter diatoms disk distinct double contour edge examination eye-piece filaments flagella flagellum fluid focal Fossil Foveaux Strait Frank Crisp genus glycerine granules Heliozoa illumination immersion inch Infusoria insects length lenses light magnified mastax matter measured membraneous layer method Micro millimetre mineral minute nucleus object object-glass oblique observed obtained optical ordinary organs paper Petit picric acid plate preparation present President prism Professor protoplasm Radiolaria rays reagent refraction rotifers ROYAL MICROSCOPICAL SOCIETY seen slide solution species specimens sponge spores staining stomata striæ structure substance surface teeth termo thickness thin tion tissues tube valve whilst woodcut
Bagian yang populer
Halaman 229 - Report on the Hydroida collected during the Exploration of the Gulf Stream by LF de Pourtales, Assistant United States Coast Survey.
Halaman 90 - LIGHT: a Series of Simple, entertaining, and Inexpensive Experiments in the Phenomena of Light, for the Use of. Students of every age.
Halaman 125 - ... unfetters the mind from prejudices of every kind, and leaves it open and free to every impression of a higher nature which it is susceptible of receiving, guarding only against enthusiasm and self-deception by a habit of strict investigation, but encouraging, rather than suppressing, everything that can offer a prospect or a hope beyond the present obscure and unsatisfactory state.
Halaman 159 - The following list of presents was read, and the thanks of the meeting were voted to the respective donors ; viz., FOR THE LIBRARY.
Halaman 55 - numerical aperture " is equal to the product of the refractive index of the medium in front of the objective, multiplied into the sine of the semi-angular aperture=n sin. w. This definition of "numerical aperture" offers at once a means by which all objectives, whether dry, water, or oil .immersion, can be directly compared. It is based on the theory whence Professors Abbe and Helmholtz deduced the limit of visibility. The...
Halaman 160 - The President proposed a vote of thanks to the author of the paper, and also to Mr.
Halaman 33 - President, in the chair. The minutes of the preceding meeting were read and confirmed.
Halaman 123 - In mathematics, chemistry, and every branch of natural philosophy, how many are the inquiries necessary for their improvement and completion, which, taken separately, do not appear to lead to any specifically advantageous purpose ! Ho'w many useful inventions, and how much valuable and improving knowledge, would have been lost, if a rational curiosity, and a mere love of information, had not generally been allowed to be a sufficient motive for the search after truth !" — Malthus's Principles of...
Halaman 93 - Society during the past month was read by the Secretary, and the thanks of the meeting were voted to the donors.
Halaman 182 - ... is as a rule prevented. I may add that Mr. Gosse has already dealt with the action of the manubria in other rotifers (I. c.). Now I do not know how it may strike others, but to me this mechanism is simply exquisite. We have three distinct lines of power, all at work and in rotation. In the first place there is a power at hinge K, then follows the power at hinge H, and then lastly comes that of the manubria ; the moment the main upper handles of the ramus get together, then, and not before, up...