To the Editor:

A correction is in order to the first sentence of "Rubbery Plastics", II (6) 1 (3/1/95) "Most plastic items in use today" are not "made from polypropylene". The table below shows PP as only the fourth largest volume plastic material.

        Material                1994 U.S. Resin Sales (million pounds)
        ----------              --------------------------------------

Polyethylene, low density               14,067
Polyethylene, high density              11,616
Polyvinyl chloride 
        and copolymers                  11,123
Polypropylene 
        and copolymers                   9,752

The data are excerpted from Modern Plastics 25(1) 63 (1/95).


                                                   Jerome S. Schaul
                                                   (SEAS '37, Ch.E)

Dear Mr. Schaul,
I made an incorrect generalization. The Moment regrets the error and thanks you for your interest.
Bob Chai