Number each sheet as you would the pages of a scrap book, and paste the scraps to the sheets. Leave enough margin around the pictorial part of the scrap so that the corners can be pasted to the sheet. If the corners only are pasted, each scrap can be detached without defacing the picture or unduly marring the sheet.
Paste the scraps of subjects relating to different matters by themselves. That is, keep one or more sheets for animals; for landscapes, seascapes; comic figures, costumes, children, etc. Let the sheet (or page) numbers run along consecutively. Keep one page for an index, with a list of subjects and pages opposite. For example, thus:
Sheet No.
Animals .......................................3, 14, 20
Botany ........................................8, 16, 30
Cartoons ........................................I7» 23
Children .......................................i, 4, 9
Indians ............................................ 16
and so on.
When quite an accumulation of sheets has been acquired, bring the various subjects together, in sequence, re-number the sheets and make a new index.