During the past two years a large number of eases of hyperthyroidism have been treated with a specific serum.1 Preliminary papers" have been published dealing with the preparation of the scrum and the therapeutic results obtained by its use. In the present paper we propose to discuss the questions arising from Ulis study from the standpoint of accumulated experience and it is hoped to make the method so plain that any physician may understand the rationale of the treatment and the special points to 1)0 observed in its application. There are two fundamental propositions to be considered, viz., the nature of the serum and the nature of the disease. These will be considered in order.
We have called the serum which we have used specific because we believe that it lias a special action on the thyroid gland, and it is necessary for the argument that