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To the Editor:
—In Delafield and Prudden's Pathology is a figure representing the kidney in advanced pyelonephritis. The Calumet Baking Powder Company is circularizing the medical profession with a booklet by one Marian Jane Parker, attempting to prove that the potassium tartrate present in food prepared with cream of tartar baking powder will produce Bright's disease. To enlighten the medical profession as to what Bright's disease is, the booklet presents Delafield and Prudden's cut of the kidney of pyelonephritis with the label "A very advanced stage of Bright's disease. The whole kidney becomes eaten away."The Calumet Baking Powder Company says you will be poisoned by potassium tartrate if you use Royal Baking Powder. The Royal Baking Powder says you will be poisoned by alum if you use Calumet Baking Powder. Can one be so foolhardy, in the light of this chemical knowledge, as to take anything but old-fashioned sour
Spillman R. BAKING POWDER AND KIDNEYS. JAMA. 1927;89(17):1445. doi:10.1001/jama.1927.02690170069032
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