NUTRIENT GELATIN. 



101 



Thus far the ridges of all folds are on the side of the 

 paper next to the table on which we are folding. The 



paper next to the table on which we are folding. The 

 paper is now taken up and each space between the seams 

 just produced is to be subdivided by a seam or fold 

 through its centre, as indicated by the dotted lines in 

 Fig. 16, but with the creases on the side opposite to that 



Fig. 17. 



occupied by the creases 1, 2, 3, 4, etc., first made. As 

 each of these folds is made the paper is gradually folded 

 into a wedge-shaped bundle (Fig. 17, a), wliich when 

 opened assumes the form of a properly folded filter 

 (seen in b, Fig.- 17). Before placing it upon the fun- 

 nel it is well to go over each crease and see that it is 

 as closely folded as possible, care being taken not to 

 tear it. The advantage of the folded filter is that by 



