210 



BACTERIOLOGY. 



of the incision. In this case they are to pass into the 

 abdominal cavity and out again, entering at one side of 

 the line of incision and leaving at the other, as indicated 

 by the solid and dotted lines in Fig. 43. (This figure 

 indicates the primary opening through the skin. By the 

 longitudinal dotted line is seen the opening to be made into 

 the abdomen ; by the transverse dotted lines, with their 

 loose ends, the sutures as placed in position before the 

 abdomen is opened ; it will be seen that these sutures in 

 all cases pass through the subcutaneous tissues only and 

 do not penetrate the skin proper.) The opening through 



FIG. 43. 



the remaining layers may now be completed ; the bit of 

 tissue deposited in the peritoneal cavity, under precau- 

 tions that will exclude all else ; the edges of the wound, 

 drawn evenly and gently together by tying the sutures, 

 and the lines of incision dressed with collodion. It 

 should be needless to say that this operation must be 

 conducted under the strictest precautions, to avoid com- 



