&NA;IN SEARCHING THE LITERATURE back to January 1930, I have failed to find any reference to the use of splanchnic block in essential hypertension. While I have had the opportunity of treating only a few cases by nerve block, yet the results have been encouraging enough to continue the treatments. I am presenting this paper in the hope of eliciting discussion, from which some suggestions might be gleaned for the continuation of this study, or in the hope that someone else has worked on this problem in a similar way, but has not yet reported his results.