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Dr. Edmond Souchon, of New Orleans, has demonstrated by experiments on dogs a useful and, as it seems, a safe method of exploration of the brain for the purpose of locating pus cavities. To obviate the necessity of removing a large button of bone, as is usually done, by means of the ordinary trephine, he employs a watchmaker's drill, which makes an opening just large enough to admit a needle with a calibre about twice the size of an ordinary hypodermic syringe. This method permits one to make several tentative punctures with the infliction of comparatively little injury. In his experiments he made use of dogs, in which he found that four such operations of trephining and puncture, in a single animal, were unattended by noticeable effects. After the results of the first operations were obliterated the animals were kept at rest for two weeks, when the same operations were
BRAIN SURGERY. JAMA. 1889;XIII(10):345. doi:10.1001/jama.1889.02401070021008
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