A treatise on the theory and practice of obstetrics.

  • William Heath Byford
Date:
1873
Catalogue details

Licence: Public Domain Mark

Credit: A treatise on the theory and practice of obstetrics. Source: Wellcome Collection.

Provider: This material has been provided by the Harvey Cushing/John Hay Whitney Medical Library at Yale University, through the Medical Heritage Library. The original may be consulted at the Harvey Cushing/John Hay Whitney Medical Library at Yale University.

    29/492 (page 15)
    the line of junction between the two ; while the greatest curve in B, the externa] branch, is Bix inches from the line of junction; the figures 3 and G denote these distances. The branches are joined together at the ends of the straight or handle part, D, by a firm joint, and a groove is made in one part of this handle portion, in which the other Binks as they close, so as to add to the security of the parallel between the two. The handle part and that portion of the branches near it arc heavy enough to prevent any de- viation from the direct line by the application of a small amount «»f force j indeed, the whole instrument is strong and linn. Each I'm;. !•:. branch terminates in a button-like extremity. The Bcale is pi and divided off in >u<-h a manner a- to correctly indicate the i tance of separation of the button extremities of the branches in an\ position in which the instrument may he placed. To measure the internal pelvis with this instrument, it i- i Bar) tO mark the points externally Opposite the termination of