Elements of Applied Microscopy: A Text-book for BeginnersJ. Wiley & sons, 1905 - 183 pagina's |
Overige edities - Alles bekijken
Elements of Applied Microscopy: A Text-book for Beginners Charles-Edward Amory Winslow Volledige weergave - 1905 |
Elements of Applied Microscopy: A Text-book for Beginners Charles-Edward Amory Winslow Volledige weergave - 1905 |
Elements of Applied Microscopy: A Text-Book for Beginners Charles-Edward Amory Winslow Geen voorbeeld beschikbaar - 2017 |
Veelvoorkomende woorden en zinsdelen
200 diameters acetic acid adulterants alcohol angles animal appear bacilli balsam basophiles bast-fibres blood blood-cells blood-stains bodies camera lucida cells cement central canal characteristic chemical chloride color compound microscope corpuscles cover cover-glass cover-slip crystals cuticula detected dilute diphtheria dissolved draw-tube dried drop edges eyepiece fibres furnish glass glycerin grains ground hæmatin hæmoglobin Hager-Mez hair Hassack hemp hilum importance iodin known layers lens lenses Manila hemp material metallic method methylene blue micro microchemical microscopical examination microtome minute mounting medium mustard numerical aperture object ocular micrometer organic paper paraffin parasite pass pepper placed plane plants polarized light potato-starch preparation present principal focus prisms produced rays refraction sections silver Sisal slide solution sometimes specimen spectrum stage stain starch structure substances sulphuric acid surface textile thallium thickness thin tion tissue trichinosis tube typhoid typhoid fever vary wool xylol
Populaire passages
Pagina 69 - ... of coffee and the spices do not always differ sufficiently from those of the pure foods in which they appear to be distinguished therefrom with accuracy and confidence by a chemical analysis alone. On the other hand, one who is familiar with the appearance under the microscope of the pure foods and the starches and various ground substances used as adulterants can with certainty identify very minute quantities of these materials when present. A chemical test may, for example, indicate the presence...
Pagina 111 - Add to the alcoholic solution of the dye on the preparation sufficient water, drop by drop, until the mixture becomes semitranslucent and a yellowish metallic scum forms on the surface. Allow this mixture to remain on the preparation for two or three minutes. 4. Wash in water, preferably in distilled water, until the film has a yellowish or pinkish tint in its thinner or better spread portions.
Pagina 9 - letters though small and indistinct are seen enlarged and more distinct through a globe of glass filled with water.
Pagina 31 - Believing in the desirability of a uniform tube-length for microscopes, we unanimously recommend : I. That the parts of the microscope included in the tube-length should be the same by all opticians, and that the parts included should be those between the upper end of the tube where the ocular is inserted and the lower end of the tube where the objective is inserted. 2. That the actual extent of tube length...
Pagina 96 - The first step in paper-making is the treatment of the raw stock with some chemical in order to break it up, to dissolve the cementing gums, and to separate the cellulose, which is always the principal constituent of paper, in as pure a form as possible. The crude material is...
Pagina 34 - The beginner may also be misled by seeing through the microscope certain cloudy specks floating across the field of view. These are the muscae volitantes, shreds of matter lying in the vitreous humor of the eye; after a time they are so discounted by the observer that he becomes unconscious of their presence.
Pagina 62 - The deuil, as he in the fulness of his malice, first inuented these great ruffes, so hath hee now found out also two great stayes to beare vp and maintaine this his kingdome of great ruffes. . . . The one arch or piller whereby his kingdome of great ruffes is vnderpropped, is a certaine kinde of liquide matter which they call starch, wherein the devil hath willed them to wash and diue his ruffes wel.
Pagina 17 - For steadiness these optical parts must be mounted upon a rigid stand; and in addition apparatus is needed for throwing light upon the object to be examined and for focusing, or so adjusting the relation between the object and the lenses that a clear image may be produced.
Pagina 11 - The compound microscope is characterized by the fact that it contains two or more lenses or systems of lenses, one of which forms an image of the object, while the other forms a second image of the first image.
Pagina 136 - In all cases the papillary ridges run across the fingers in the vicinity of the third joint, and at the tip they follow the curve of the nail in a rounded arch.