Appears that's the only book Pavlik wrote and he's known for being a California historian, poet, et al., not a mountaineer nor climber, or he likely would have capitalized it as it was named after someone (ala SI units) had he known.gore galore wrote:The Norman Clyde photo is the front cover photo of Robert C. Pavlik's biography, "Norman Clyde Legendary Mountaineer of California's Sierra Nevada," Heyday Books, 2008. The Cover Photo caption reads "Norman Clyde demonstrating, in dramatic fashion, a dulfersitz, a method of rappelling without the use of hardware." Courtesy of Jules and Shirley Eichorn.
Here's another photo of Norman Clyde, again posing for the camera versus in situ rapping. Bill Oliver has a lengthy history series for those interested in Clyde and other early climbers of the Sierras titled
"A Tribute to the Honorary Members of the Sierra Peaks Section:
Norman Clyde, Glen Dawson & Jules Eichorn"
Part I, Part II, Part III, Part IV, Part V, Part VI.
They're long enough to merit downloading the PDFs to read (100+ pages).
As far as what constitutes a Duelfersitz, some may consider any rope wrapped around the body to be one, but there are multiple ways to do so with different names to distinguish just like knots and for the same reason. I often use half an "arm rappel" when belaying fireman for the added holding power.
South African, arm, and Duelfersitz rappels
