A Practical Treatise on the Use of the Microscope: Including the Different Methods of Preparing and Examining Animal, Vegetable, and Mineral StructuresH. Bailliere, 1848 - 464 pages |
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Other editions - View all
Common terms and phrases
achromatic adjustment air bubbles angle angular aperture animal animalcule aperture apparatus argand lamp attached Blow-fly brass Canada balsam cell cement colour compound body compound microscope condenser consists cork crystal cuticle delicate described diameters diamond disc dissection edge employed epithelium examined exhibit eye-piece fibres field of view flat fluid focus forceps hairs hole HOMEOPATHY illumination inch infusoria insects instrument kinds laid lamp larvæ latter lens lenses Lieberkuhn London magnifying power manner marine-glue membrane method micro micrometer microscopists milled head mirror mounted mounted dry object-glass opaque objects papillæ pencil phial piece of glass placed plants plate polarized light portion prism purpose putty powder rack and pinion rays readily represented by fig scales screw sections seen selenite shown by fig side slide species specimens stage striæ structure surface thick thin glass tissues transparent trough tube turpentine upper vessels whilst wood
Popular passages
Page 327 - This will soften or decompose all the viscera, and the tracheae may then be well washed with the syringe, and removed from the body with the greatest facility, by cutting away the connections of the main tubes with the spiracles by means of finepointed scissors. In order to get them upon the slide, it must be put into the fluid, and the tracheae floated upon it ; after which they may be laid out in their proper position, then dried and mounted in balsam.
Page 4 - Hook used to look upon the magnified object with one eye, while, at the same time, he viewed other objects, placed at the same distance, with the other eye. In this manner, he was able, by the help of a ruler, divided into inches and small parts, and laid on the pedestal of the microscope, as it were, to cast the magnified appearance of the object upon the ruler, and thus exactly to measure the diameter which it appeared to have...
Page 9 - ... as because that light itself is a heterogeneous mixture of differently refrangible rays. So that, were a glass so exactly figured, as to collect any one sort of rays into one point, it could not collect those also...
Page 39 - Professors Airy and Barlow, Mr. Coddington, and others, contributed largely to the theoretical examination of the subject; and though the results of their labours were not immediately applicable to the microscope, they essentially promoted its improvement.
Page 421 - ... allowing much more light from a to fall upon it, and to be transmitted through it and collected at i, every marking, &c., at a will be clearly represented at i, and the eye, being powerfully acted upon by this increase of light, will become highly sensible of it.