2 PROCEEDINGS OF UNITED STATES NATIONAL MUSUEM. 



heavy weights. The papers should be changed every day until the 

 specimens are dry. 



If of animal origin — 



1. Name of drug. 



2. Name and description of animal from which obtained. 



3. How obtained and prepared. 



4. How used. 



If of mineral origin — 



1. Name. 



2. Source. 



3. Composition. 



4. Mode of i)reparation. 



5. Medical uses. 



III. Bear always in mind that the value of every specimen in each of 

 these divisions will be directly proportionate to the amount of accurate 

 information which accompanies it, especially such as relates to source 

 and mode of production. Everything which will help to illustrate and 

 substantiate this information will be worth diligent search and careful 

 preservation. 



