Experimental studies on the influence of various narcosis and surgical procedures upon the water content in the brain Part II. Experiments of the influence of various surgical procedures upon the water content in the brain

1) Cats were anesthetized with dial. After craniotomy, such stimulations as rubbing, concussion and compression were performed. The amount of the water in the brain was measured on the affected and the intact side. 2) The change of the bound water was not found. 3) The slight rubbing, concussion and compression caused neither change of the free nor of the total water. 4) After strong rubbing, concussion and compression an increase of the free and total water was found. 5) It increased in the following order: cortex, white substance and cerebellum, but in the pons it showed no change. 6) Compared with the intact side. it was more striking in the affected side.