In this volume Dr. Petersen has again carried forward his study on the effect of weather on the human organism. The first section of the book, which discusses diseases of the thyroid, is the one most apt to convince the casual, skeptical reader that the observed bodily changes occur in response to changes in the weather and are not mere coincidences. The hypothyroid patient fails to respond. Given thyroid, however, he shows the characteristic development of the a. r. s. phase (anabolism, reduction and spasm) with sharp rises in barometric pressure. Both the hyperthyroid and the leptosomatic type at first respond quickly and effectively to atmospheric changes, but with repeated stimuli they reach the stage of exhaustion much more quickly than the normosomatic or the pyknic type.
Throughout the study of the other diseases discussed in this volume, diabetes, the blood dyscrasias and tuberculosis, one sees how definitely the ability