A NEW METHOD FOR DUPLICATING CATALOGUE CARDS

In the field of technical information and documentation the problem of compiling an abstract bulletin and then providing catalogue cards of the abstracts for a card index has hitherto implied the necessity of completely retyping the information given in the abstract bulletin on to stencils for subsequent duplication by the usual processes. It can be seen that this old method, which was unavoidable in the case of abstract bulletins with formats different from that of the catalogue cards, was unnecessarily cumbersome and time‐consuming because of the second typing stage. The new process obviates this retyping stage and thereby ensures a consequent saving in time and expenditure as shown in Table I.