omfortably; the top of it is tobe made of slate with a hole in it about three inches indiameter, to allow light to reach transparent objectsplaced over it. Under this table there must be a shelfor stage, on which you place a small dressing-glass, toreflect hght upwards. Here is your apparatus… … Some persons, however, are fantastical and fastidious,dont hke prisms, and must have everything done in aphilosophical manner. To such I recommend the follow- MICROSCOPIC OBJECTS. 203 ing apparatus. First, then, is fig. 3, consisting of a tubecontaining either a rectangular prism or a plane metal,…
Microscopy
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