Regarding "Cancer doctors," and their common career woes "from a return of the sores which were said to have been cured by them." Notes cancer doctors claiming to have obtained cures from Native Americans, which Rush finds improbable due to "Cancers being unknown among the Indians." Doubts the efficacy of vegetable cures, believing most to rely on arsenic. Warns Stuart that if he has found a cure it likely will yield "but a small profit... for a majority of the persons afflicted with them are poor people," while if he fails he will lose his good character. Letter arrived at the Clements Library with a portrait of Benjamin Rush, engraved by R. W. Dodson from a painting by T[homas] Sully. Printed in L. H. Butterfield, ed., Letters of Benjamin Rush, Vol. 2 (Princeton: Princeton University Press, 1951), pp. 1049-1050. Donated by Peggy Harrington, from the collection of Kevin Harrington, 2014.