Maywood, Ill., Feb. 16, 1907.
To the Editor:
—Reading the theories, new and old, of the etiology of rheumatism in children, in The Journal of recent date, reminds me of a patient under my care two years ago. It was a typical case of croupous pneumonia in a boy of 7. The crisis was passed on the fifth day. The second day following he developed rheumatic fever with swollen and extremely painful ankle and knee joints on the right side, which several days later shifted to the left side. Under the usual treatment he made a good recovery. This suggests the probability of the cause of the rheumatism as being Diplococcus pneumoniœ infection, and offers a field for research.