. Some points in the surgery of the brain and its membranes . Fig. 5.—Anterior part of cisterna magna distended by artificial injection.(Key and Retzius.) The injection was made into the sub-arachnoid space of the spinal theca. Theinjection has penetrated everywhere beneath the arachnoid, in the interpeduncularspace, and in the sulci between the Fig. 5.—Anterior part of cisterna magna distendedwith pus. (Lebert, i85i.) From a case of suppurative meningitis in a soldier aged24 years. Death on the fourth day. The onset wassudden, and the symptoms were fever, shivering, severeoccip
. Some points in the surgery of the brain and its membranes . Fig. 5.—Anterior part of cisterna magna distended by artificial injection.(Key and Retzius.) The injection was made into the sub-arachnoid space of the spinal theca. Theinjection has penetrated everywhere beneath the arachnoid, in the interpeduncularspace, and in the sulci between the Fig. 5.—Anterior part of cisterna magna distendedwith pus. (Lebert, i85i.) From a case of suppurative meningitis in a soldier aged24 years. Death on the fourth day. The onset wassudden, and the symptoms were fever, shivering, severeoccipital pain, prostration, delirium, and finally coma. Fig. 7.—Posterior basic menin-gitis. (Lees and Barlow.) Child aged 5 months. Dura-tion of illness 11 days. The dark shading indicates thesites of pus collection under thearachnoid. The anterior part ofthe cisterna magna was distended,and pus was also present over thetips of the temporo-sphenoidallobes. 14 SOME POINTS IN THE SURGERY Barlow, the anterior part of the cisterna magnais seen distended with pus, just as one of Key andRetzius figures shows it distended artificially byinjection. It is a common surgical experience—forexample, in operating to relieve optic neuritis—that it is easy to obtain a flow of fluid from thesub-arachnoid space of the base of the brainwhile it is almost impossible
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