ADMINISTRATION OF SALVARSAN AND NEOSALVARSAN 



863 



piece of sterile gauze, which filters out any bits of glass or other insoluble 

 particles. For administration any simple apparatus, such as that shown 

 in Fig. 147, answers all purposes. 



Injecting Apparatus. A number of different apparatus for the ad- 

 ministration of dilute solutions of salvarsan and neosalvarsan have been 

 invented and marketed. That shown in Fig. 146 is well adapted for the 

 purpose; one cylinder carries sterile normal salt solution and the second 





FIG. 147. METHOD OF MAKING INTRAVENOUS INJECTION BY GRAVITY. 

 This method is suitable for the intravenous administration of salvarsan or anti- 

 streptococcus serum, etc. The needle has been entered into a prominent vein 

 (indicated by a flow of blood) ; the tubing has been attached by means of a metal 

 tip which fits the needle easily and snugly; the tourniquet has been loosened and the 

 injection is being given. 



holds the salvarsan or neosalvarsan solution. By fastening the cylinders 

 to an upright rod attached to the side of the table their height may be ad- 

 justed as desired, and by means of the special cock the operator may 

 insert the needle and allow the salt solution to flow in until he is sure of 

 having satisfactorily penetrated the vein, when he may turn on the sal- 

 varsan solution. In this manner the physician is enabled to give an 

 injection without assistance. 



Or, if desired, the simpler apparatus shown in Fig. 147 may be used. 



