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ARMED FORCES INSTITUTE OF PATHOLOGY
![](http://upload.wikimedia.org/wikipedia/commons/thumb/1/1b/The_Armed_Forces_Institute_of_Pathology_-_Figure_17.png/400px-The_Armed_Forces_Institute_of_Pathology_-_Figure_17.png)
Figure 17.—Photomicrography by artificial light. A. Using the electric light. B. Using the magnesium light.
the median line, and just above the left lateral sinus, which it opened. It then penetrated the dura mater (the outer sheath covering the brain), passed through the left posterior lobe of the cerebrum, entered the left lateral ventricle,