In a series of papers under the variously grouped authorship of Griffith, Roberts, Fry, Jeffers, Lindauer, Fewell and McGuinness1 evidence has been presented which is somewhat at variance with the commonly accepted theory of absorption of fluid from the cerebrospinal space. This widely held theory may be summarized from papers by Weed2 and Fay3 somewhat as follows: 1. Fluid leaves the blood stream and passes through the choroid plexus to form the bulk of the cerebrospinal fluid. A lesser amount leaves the capillaries of the brain to become the intercellular fluid of the brain, which, after performing its function in tissue metabolism, is finally drained off, either into the capillaries of the brain or along the perivascular spaces, through which it reaches the subarachnoid space, to add a final minor increment to the cerebrospinal fluid.
Absorption of cerebrospinal fluid occurs: (1) mainly into the blood stream, and
GARLICHS RW, GRIFFITH JQ. LYMPHATIC ABSORPTION FROM AUDITORY BULLA OF THE RATWITH SPECIAL REFERENCE TO THE LATERAL SINUS. Arch Otolaryngol. 1942;36(2):226–231. doi:10.1001/archotol.1942.03760020062007