CHAP. ITI.] 



THE MICROSCOPE. 



243 



structure under examination; for, not only is the field of view 



FIG. 181. Compound microscope FIG. 182. Microscope used by chemists, 



mounted on stand. 



diminished, but, unless the lenses be of the very best construction, 



FIG. 1S3. Nachet's inclined microscope. 



FIG. 184. Amici's horizontal microscope. 



though the object may look larger, no more detail will be seen. 



R 2 



