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Abstract
A simplified and time-saving Nissl method is described in which the fresh nervous tissue is placed directly into: dioxane, 65–70 ml.; water, 15 ml.; 95% alcohol, 20–15 ml.; and toluidine blue, 1 g. This solution fixes, stains, partially clears, and dehydrates in one procedure. The material is then sectioned according to a dry-ice method and mounted on the slide either with or without the use of the rapid albumen procedure. Thus it is possible to terminate an experiment one day and have the tissue ready for microscopic observation on the next.