This manual is especially intended as a preliminary course of reading for students about to take the required course of "Fevers" at a British isolation hospital. It is therefore necessity somewhat elementary. The clinical history of the various exanthemata is briefly described and some suggestions as to treatment are added. It is interesting to note that the infective character of the scales in scarlet fever is regarded of decidedly minor importance. The information in this little book is thoroughly up to date, and it will well repay perusal by those who wish to refresh their knowledge of these subjects.