The Thorax 133 



ployment of such a needle reduces the danger of syncope from too 

 rapid or sudden withdrawal of fluid to a minimum. The instru- 

 ment is used in the following manner : Shut the cock and withdraw 

 the piston to form a vacuum within the barrel of the syringe. Select 

 a portion of skin inferior to the area of dullness and disinfect it 

 as thoroughly as possible. Introduce the point of the needle under 

 the skin at this spot, open the cock, and press the needle slowly 

 inward until resistance ceases and the liquid is seen to gush into 

 the syringe. Shut the cock and empty the syringe, and repeat the 

 same action until the fluid is nearly all removed. Perform the 

 operation again and again if the effusion recurs. 



BIBLIOOBAPHY. 



Delafond— Rec. de MM. V«t«r. 1829, p. 714. 



Del Yeccblo — Rlf. med. 189S, p. SO. 



Blsberg — Journ. of Exper. Medicine. Sep.-NoT., 1899. 



Fischer — Langenbeck's Archlv. f. kltn. Chlmrg. 1867, p. 671r. 



Nocard— Arch. V«t6r. 1882, p. 401. 



Fhllllppov — Russ. med. 1886, p. 187. 



Porcher & Desoabry — Gomptes rendns d. 1. Soc. de Biol. 1895, p. 844. 



Ricketts — American Medicine. June, 1902. 



Rosenthal — Dentscb. med. Wochenschr. 1899. 



Salomonl— Centralb. 1. Chlmrg. 1896. 



Sherman — American Medicine. June, 1902. 



Sledamgrotzky — Ber. ne. d. Teterlnaenr. im Koenlgr. Sachsen. 1872, p. 6S. 



Taffler Jb HalUon — Comptes rendos d. 1. Soe. de Blol. 1898, p. 988. 



