MAKE-UP is done by taking composed type from the galley in sufficient quantity to make a page of prescribed size. It is then tied up so that it can he safely handled and is put upon an imposing-stone or iron-topped table. When the page consists of several columns, as in news papers, the type of one column is placed after another, upon the stone. The pages are separated by suitable blanks, and the whole mass of type is 'locked up' by filling the angular space around the type and inside the iron frame with strips of wood or metal and by wedging them with screw clamps or quoins, so tightly that none of the type can fall out. Proofs are taken from the type in galley and in page form, which are read for error,, so that corrections may be made be fore the type is sent to press. At least two proofs of the type—a galley proof and a page proof— are always taken and read for errors, and very often in careful work several proofs of each kind are 'pulled' and read by different persons. See
PROOF-READING.
The printer's form may consist of any number of pages from 2 to 128. 'Imposition' is a method of arranging pages so that they will follow one another upon the printed paper in the proper consecutive order. The method of imposition or the order of arrangement differs according to the number of pages in the form. but the general principle of the process may be understood from the following diagram of a 16-page form, in which the numeral in each case indicates the number of the page in that form and its location the top of the page. To guide the binder in ar ranging the printed sheets in their proper order, letters or numerals known as are placed at the foot of the first page of each section. The letters J, V, and W are not used for this purpose.