File:A treatise on physiology and hygiene for educational institutions and general readers (1887) (14760157456).jpg

Identifier: treatiseonphy00hutc (find matches)
Title: A treatise on physiology and hygiene for educational institutions and general readers ..
Year: 1887 (1880s)
Authors: Hutchison, Joseph C. (Joseph Chrisman), 1822-1887
Subjects: Physiology
Publisher: New York, Clark & Maynard
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

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with a thin plate of glass, very properly calleda cover, that the moisture of the specimenmay not tarnish the object-glass. Square or cir-cular covers of very thin glass are therefore pro-vided; and a good supply of these should bealways on hand. These glasses should be keptin a covered dish filled with a mixture of alco-hol and water. Simple water will not removethe fatty matter which exists in all animal tis-sues, and, therefore, the glasses cannot be thor-oughly cleaned with it alone. 11. When glasses are required for use,they should be removed from the liquid andwiped clean and dry with a soft linen handker-chief. Delicate knives, scissors, needles mounted in handles, for.ceps, pipettes or little tubes for taking up water, should be ob- 9. The characteristics of the best instrument? What special requisites should beinsisted upon ? Why, as to a horizontal stage ? 10. Slides? Covers, square and circular? How kept? 11. Cleaning the glasses ? Knives, scissors, etc. ? Various liquids ?
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Fig. 71. —CompoundMicroscope. 286 THE MICROSCOPE. tained; these are essential to all microscopical study. The tableshould be supplied with . glass-stoppered bottles containing thevarious liquids ordinarily used in the study of physiology. Thus,tincture of iodine is indispensable in studying vegetable structure,acetic acid in the study of animal tissues; and other articles willhave to be added from time to time, as your progress in studydemands them. 12. Preliminary Studies.—In order to prepare the way for thestudy of any department of science with the aid of the microscope—for the microscope is but an eye, and can be turned in almost anydirection for purposes of investigation—it is necessary to becomeacquainted with the many objects which are liable to complicate theexamination of particular structures. Both air and water are full offloating bodies, and the most common of these should first occupythe attention. In the city, particles of starch are alway floating inthe air. Tak

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