EXTRACTS FROM EXCHANGES. 
373 
inent, which was tried for a year, but proved unsuccessful. P. 
therefore decided to resect the nervi pudendi, of which on each 
side a piece of 2 cm. was extirpated. The wounds were stitched, 
and healed very rapidly. Four months after the operation 
the bitch was covered without difficulty, became pregnant, 
and enjoys since then the best of health.—( Wochenshr . f. 
Thierheilk .) 
Anesthesia by Injecting Cocaine into the Sub¬ 
arachnoidal Space of the Spinal Cord [A. E. Mettam \. 
—Bier in Kiel, Seldowitsch in Russia, and Corning in Chicago, 
described this ansesthatizing method, but without awakening a 
great interest for the same. Tuffier was first to call the atten- 
tion of the profession to this method by his articles, and soon 
was followed by many imitators. The same treated a young 
man for an inoperatable osteosarcoma of the ilium. For the 
relief of the intense pain from which the patient suffered, mor¬ 
phine injections were given, which proved entirely effectless. 
On the other hand, a subarachnoidal injection of cocaine into the 
spinal cord produced in a few minutes the desired effect. Un¬ 
fortunately the relief only lasted for two hours. Two days 
after the injection was repeated with the same good results. 
Since this trial Tuffier applied this method in over 250 severe 
operations on different parts of the bodv situated below the dia¬ 
phragm. A fine trocar is inserted into the intervertebral 
space of the last lumbar vertebra, until it reaches the spinal 
canal, and then further into the subarachnoidal space, when the 
injection is made of 1 cm. of a 2 per cent, solution of cocaine. 
The author experimented with this method in veterinary prac¬ 
tice, and is very well satisfied with the results obtained. In 
horses the length of the trocar is to be 10 cm. and 15 mm. in 
diameter. The place of puncturing is on a line which connects 
both internal angles of the ilium. The horse hardly moves 
during the operation ; all that is necessary is to apply a twitch 
and to hold up one foot. I11 cattle the operation is performed 
at the same place and with the same trocar ; here the opera¬ 
tion is considerably easier, as the intervertebral spaces are 
wider, but more difficult to puncture, as the skin is thicker. 
Also in dogs the place of operation is found in the same man¬ 
ner. The best way to puncture is with a hollow needle of 6 
cm. long and 1 mm. in diameter. The experiments convinced 
the author that cocaine solution can be safely injected into the 
spinal cord of animals, producing a satisfactory analgesia. All 
operations on the hind extremities and in, or outside the ab- 
