The American Journal of Microscopy and Popular Science, Volume 3-4Handicraft Publication Company, 1878 |
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Halaman 6
... glass . When the which is cut into right and left hand screws , balsam or jelly has hardened , and the slide so that when the milled head M is turned , is ready for finishing , this temporary ring the lugs move towards or recede from ...
... glass . When the which is cut into right and left hand screws , balsam or jelly has hardened , and the slide so that when the milled head M is turned , is ready for finishing , this temporary ring the lugs move towards or recede from ...
Halaman 16
... glass . Well , now , therefore offer the following brief remarks by this half - inch has shorter working distance , way of closing a controversy which , in the and , as a matter of course , less penetration nature of things cannot lead ...
... glass . Well , now , therefore offer the following brief remarks by this half - inch has shorter working distance , way of closing a controversy which , in the and , as a matter of course , less penetration nature of things cannot lead ...
Halaman 17
... glass for such and similar purposes . In re- sponse , he was furnished with a 1-6th duplex . years ago , " read " 130 ° ten years ago , ” etc. Last summer he visited me during his vaca- tion , and became my pupil . He was , of course ...
... glass for such and similar purposes . In re- sponse , he was furnished with a 1-6th duplex . years ago , " read " 130 ° ten years ago , ” etc. Last summer he visited me during his vaca- tion , and became my pupil . He was , of course ...
Halaman 31
... glass between an objective and the object . All microscopists are familiar with a fig- ure like our illustration ( Fig . 8 ) showing the action of the cover - glass G upon rays coming from the point O. Owing to the refractive action of ...
... glass between an objective and the object . All microscopists are familiar with a fig- ure like our illustration ( Fig . 8 ) showing the action of the cover - glass G upon rays coming from the point O. Owing to the refractive action of ...
Halaman 32
... glass , a 1-5 , e . g . the novice may not on the part of certain ones who speak with be able to appreciate the effect of a small authority . change in the screw collar , but with a higher power or a wide angle glass the effect is very ...
... glass , a 1-5 , e . g . the novice may not on the part of certain ones who speak with be able to appreciate the effect of a small authority . change in the screw collar , but with a higher power or a wide angle glass the effect is very ...
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176 Broadway achromatic acid Address advertising algæ AMERICAN JOURNAL angle angular aperture animal apparatus appear balsam binocular blood body Broadway Canada balsam cells cement cents color corpuscles cover crystals diameter diatoms examined exchange exhibited eye-piece fact flagella fluid foraminifera frustule give glass glycerine H. L. Smith hair Hitchcock hoop illumination immersion inch insects instrument interesting jects JOURNAL OF MICROSCOPY lens lenses light matter means meeting ment method micro micrometer microtome millimetre minute mounted objects Navicula object-glass oblique observed oleomargarine olivine optical opticians organisms paper plate polariscope prepared present President Prof rays refraction rotifer San Francisco Microscopical scientific Scroll Saws Secretary seen sent shellac slide species specimens spores stage staining stand Street structure surface thin tion tissue Tolles tube umbilicus valve Volvox York Zeiss
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Halaman 8 - Nero was stated to measure eleven feet from the tip of his nose to the end of his tail, and his proportions were in other respects large.
Halaman 167 - If we had a keen vision and feeling of all ordinary human life, it would be like hearing the grass grow and the squirrel's heart beat, and we should die of that roar which lies on the other side of silence.
Halaman 84 - It has been found invariably that in those departments of physics where the phenomena are beyond our control, or into which experimental inquiry from other causes has not been carried, the progress of knowledge has been slow, uncertain, and irregular ; while in such as admit of experiment, and in which mankind have agreed to its adoption, it has been rapid, sure and steady.
Halaman 79 - 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 266 - Important organs of the body were studied with a great deal of interest, and with a great deal of difficulty, and suspected of being very elaborate and complicated. The skin was described as consisting of the epidermis and true skin, having beneath it
Halaman 246 - ... the germ theory teaches us that every new case of the contagious maladies already enumerated is the immediate offspring of a preceding case, and the direct result of exposure of an unprotected human being to the chance of having the spores or seeds of disease implanted in its system, an exposure which it only required sufficient knowledge, sufficient foresight, and sufficient care to avoid.
Halaman 81 - The impressions of sense, unconnected by some rational and speculative principle, can only end in a practical acquaintance with individual objects ; the operations of the rational faculties, on the other hand, if allowed to go on without a constant reference to external things, can lead only to empty abstraction and barren ingenuity.
Halaman 63 - See man for mine!" replies a pamper'd goose: And just as short of reason he must fall, Who thinks all made for one, not one for all.
Halaman 7 - SHOOTING ON THE WING : Plain Directions for acquiring the art of Shooting on the Wing. With useful Hints concerning all that relates to Guns and Shooting, and particularly in regard to the art of Loading so as to Kill. By an Old Gamekeeper.
Halaman 80 - ... yet unexplained, every new discovery in science brings into view whole classes of facts which would never otherwise have fallen under our notice at all, and establishes relations which afford to the philosophic mind a constantly extending field of speculation, in ranging over which it is next to impossible that he should not encounter new and unexpected results.