320 Correspondence J ALLERGY CL!N. IMN\UNOL. MAY 197?

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VOLUME 49 NUMBER 5

Correspondence 321

Erratum

Ttlis is with refcrcnce to my pnper cwtitlctl “Allergci vasculur purpuru” which :rppcwred in the July, 1971, issue of the JOURNAL, pp. ;-IL’. I nm informed by t.he S:dion:~l .is;Poci:ttion of 3I:lrgnrine Mnnufacturers that %o commcrcinl m;lrr3rine uses tflrtr:lzinc,” and tIlla -\nic-ri- ran Butter Institute reports that this dye is not urc~l in tmttcr.