Doubtless this is the most complete contribution on the subject which has appeared to date. As Pierre Marie says in the preface, although the epidemic of encephalitis has practically disappeared, we are constantly consulted by patients with the late manifestations. Consequently, this brochure is timely and of practical value. Dr. Levy has devoted several years to this work, and has examined more than 200 patients, the basis of the present monograph being the personal study of 129 cases, all at the Salpêtrière.
The author discusses the difference between continuous and late or delayed (tardives) manifestations, the first being symptoms which persist from the acute stage, the second being symptoms which appear after a period of latency or after the patient apparently has made a complete recovery. Wisely, we think, the author declines to make a radical distinction. Our knowledge of the bacteriology and pathology of the disease is still too