Page 163 - My FlipBook

CYLINDER OR BLOCK FILLING. 159

gold are objectionable in one particular, namely, the
irregularity of the leaves or laminae of the foil ; these

are placed in the cavity without any regard to regu-
larity, and the consequence is, that without very
great care, far less gold will be introduced than by
some other arrangement. Far more difficulty is
experienced in obtaining a uniform and equal density
than when the laminae are placed smoothly together.

Another method of preparing the foil is to fold it
into from ftmr to twelve thicknesses, then cut off

strips in width corresponding to the diameter of the
cavity. The strip thus prepared is introduced in the
same manner as the roll, except that as each fold is
inserted, it is placed smoothly against the preceding
portion, and kept smooth and free from wrinkles.
By this arrangement very little force is required to

bring the folds in perfect contact. Some care and
skill will be necessary to bring the instrument to
bear upon the whole surface of the fold. More gold
can be put into a cavity in this manner than in rolls
or pellets, unless these are used in very small portions,
and condensed very thoroughly as they are put in.

CYLINDER OR BLOCK FILLING.

Another and in some respects far preferable
method, is filling with cylinders or blocks. Some