AMERICAN MUSEUM GUIDE LEAFLETS 



formed is poured plaster which covers the second side of the leaf. When 

 it sets, the two blocks of plaster may be separated and the leaf between 

 them will have left its impression on the inner face of each. It will be 

 seen that each key on the first block has now its mate on the second, for 

 tongues of plaster from the last-poured mass have filled the notches cut 

 in the first one. Thus the two parts interlock and fit together in one 

 position only. 



THE WAX LEAF READY FOR TRIMMING 



The mold is now set aside to dry and before using hardened by 

 boiling in a strong solution of borax for about twenty minutes or soaking 

 in melted paraffin for about the same time. Molds treated with paraffin 

 give the best impression but are a little difficult to use on account of the 

 tendency of the wax to stick to them. In case a mold is going to be 

 used a great many times, it is best to soak it in linseed oil for five minutes 

 and let it dry for a week or two. 



