What is CALBERLA?

A method of imbedding microscopic specimens in egg-emulsion. The white of several eggs is separated from the yolks, the chalazae removed, and the white cut up with a pair of scissors. To each 15 parts of white add one part of a 10 per cent, solution of sodium carbonate To this solution add the well-shaken yolks and again shake well. Pour the mixture into a deep vessel, allow to settle, remove the scum, and the mass is ready for use. The specimens, after being well washed in water, are placed in this mass until permeated. They are then fastened with pins to the freshly-cut surface of a piece of hardened mass.

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Definition of  CALBERLA