. The microscope; an introduction to microscopic methods and to histology. Microscopes. Fig. i88. Micrometer Calipers for Measuring THE Thickness of Slides and Cover-glasses. (From the Catalogue of the Brown & Sharpe Manu- facturing Company). alcohol added. The covers remain in this until needed. In wip- ing use the precau- tions given with slides (§ 490)- Test for the proper cleanliness as for slides (§ 490), and remember the advantage of heat- ing the cover-glass in a Bunsen or alcohol flame to render it cap- able of receiving a smooth and even film of blood or other aqueous liquid. §
. The microscope; an introduction to microscopic methods and to histology. Microscopes. Fig. i88. Micrometer Calipers for Measuring THE Thickness of Slides and Cover-glasses. (From the Catalogue of the Brown & Sharpe Manu- facturing Company). alcohol added. The covers remain in this until needed. In wip- ing use the precau- tions given with slides (§ 490)- Test for the proper cleanliness as for slides (§ 490), and remember the advantage of heat- ing the cover-glass in a Bunsen or alcohol flame to render it cap- able of receiving a smooth and even film of blood or other aqueous liquid. § 494. Cleaning large covet-glasses. â For serial sections and especially large sections, large quadrangular covers are used. These are to be put one by one into a cleaning mixture as for the smaller covers and treated in every way the same. In wip- ing them one may proceed as for the small covers, but special care is necessary to avoid break- ing them. It is desirable that these large covers should be thin â not over mm., otherwise high objectives can- not be used in studying the preparations. § 495. Measuring the thick- ness of cover-glasses. â It is of great advantage to know the ex- act thickness of the cover-glass on an object; for, (a) in study-. FlG. 18 Measurer for Slides and Cover-glasses. (Modified from the figure in Zeiss Catalogue). Cover A cover-glass between the jaws (y) â / Jaws between which the object to be measured is placed. H Hand which points to the gradua- tions on the face indicating the fractions of a millimeter or inch that represents the thickness of the object between the jaws. L Lever by which the jaws are opened to receive the Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Gage, Simon Henry, 1851-1944. [Ithaca, N. Y. The Comstock publishing company
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