is used by the chemist to follow reactions inminnte quantities of material. This is done by examining thecrystals which separate on the addition of a drop of reagent to adrop of solution containing the unknown substance. § 252. Experiment.—To a drop of distilled water on thecorner of a slide add a… … Fig. 140. Chamot Chemical Microscope {Bausch & Lomb Opt. Co. (//. II] MICRO-CHEMISTRY 179 a fine glass rod push the two drops together. Shortly bundles ofneedle-like crystals of CaSo4-2H,0 will appear. This is charai teris- tic of calcium. Lead nitrate, strontium or barium chloride treated in…
Microscopy
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