analysis or titrimetry, colorimetry is a close second, and if combined with those on the very similar method of spectrophotometry, -exceeds every other method. Instrumental methods of analysis comprise 56% of all papers, the first five being (in decreasing order) colorimetry, spectrophotometry, emission spectrography, instrumental titrimetry (volumetric analysis), and polarography. Statistically outstanding steps preliminary to the final determination are (in decreasing order) adsorption (especially chromatography), extraction, precipitation, distillation, sampling, and filtration. Next to English, the language in which most 1946 analytical papers are written is Russian; French, Spanish, and Italian follow in that order. Tabulation of the countries in which the research for papers was done gives, in decreasing order, United States, Great Britain, U.S.S.R., France, Sweden, etc. More than half of the papers (58%) are on the determination of organic compounds.

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