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January 20, 1912

Mounting Pathologic Specimens

Author Affiliations

San Diego, Cal.

JAMA. 1912;LVIII(3):215. doi:10.1001/jama.1912.04260010217027

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To the Editor:  —I wish to give a few suggestions to those mounting gross pathologic specimens. In putting up a great many specimens in gelatin, I always bad the trouble of airbubbles forming, as well as discoloration of the gelatin and sometimes of the specimens themselves. Not only has the method these faults but it is also expensive. If one wants to freshen up gelatin-mounted specimens, it is necessary to break the seal and take off the gelatin and remount them.The method I now use is very cheap; in fact, each specimen costs about 10 cents and no special jars or dishes are required. The specimens are first prepared by Kaiserling's method, which is as follows:1. Fixation for one to five days in:Formaldehyd... 200 c.c.Water...1,000 c.c.Nitrate of potassium... 15 gm.Acetate of potassium... 30 gm.Change the position of the specimen frequently. The time of

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