Mountants 
DextTRINE—An excellent preparation, when properly 
made, which keeps well and adheres firmly: 
White dextrine 1000 g 1 Ib. 
Alum —  40¢ 280 gr. 
Sugar 156¢ 214 02. 
Water 1200 ccm 19% oz. 
Phenol (carbolic acid) 3 ccm 22 min. 
Mix the dextrine with the water, boil for 5 minutes, add the 
sugar and the alum; stir until dissolved, allow to cool slightly, 
add the phenol, and cast into wide-mouthed bottles. Inferior 
dextrine gives a coloured paste; the alum is preferably left 
out, as it may subsequently cause fading of the prints. If 
the bottles filled with the paste are cooled for several days in 
a refrigerator, the paste sets to a white firm mass. A simpler 
formula is: 
White dextrine 1000 g 1 Ib. 
Water 625 ccm 10 oz. 
Wintergreen or clove oil 10 ccm 60 drops 
Or: 
White dextrine 1000 g 1 Ib. 
Water 1500 ccm 24 oz. 
Oil of wintergreen 2 ccm 12 min. 
Oil of cloves Z,cen 12 min. 
Place the water in a vessel standing in a water bath, and keep 
sie temperature at 717 C. (1607 1K.) = istin im the dextrne 
slowly, and, when it has all dissolved, add the oils. Set ina 
cool place for several days, when it will congeal to a firm 
white paste. 
DEXTRINE AND Gum.—A very adhesive paste: 
325 
