Fig. 1.
IS Part of the Dura Ma∣ter, together with the Falx, dri'd.
A A, The Falx suppor∣ted, so as to shew its pro∣per Extent and Figure.
B B, The Sinus Falcis Superior or Longitudina∣lis, opened.
C, The Sinus Falcis Inferior, not distinguished in this Figure.
D D, &c. The Orifices of Veins opening into the Longitudinal Sinus, and Trunks of other Veins going to it.
E, The Beginning of the Longitudinal Sinus at the Os Crista Galli.
F F, The Left Lateral Sinus.
G G G, Two Parts of the Quadruplicatures of the Dura Mater, lying between the Cerebrum and Cerebellum.
H H, &c. The Sticks, Thread, and Pins made use of, to support the Membrane in drying it.